diff --git a/python/plugins/sextante/algs/ftools/PointDistance.py b/python/plugins/sextante/algs/ftools/PointDistance.py
@@ -66,7 +66,7 @@ def defineCharacteristics(self):
         self.name = "Distance matrix"
         self.group = "Vector analysis tools"
 
-        self.addParameter(ParameterVector(self.INPUT_LAYER, "Input point layer", ParameterVector.VECTOR_TYPE_POINT))
+        self.addParameter(ParameterVector(self.INPUT_LAYER, "Input point layer", [ParameterVector.VECTOR_TYPE_POINT]))
         self.addParameter(ParameterTableField(self.INPUT_FIELD, "Input unique ID field", self.INPUT_LAYER, ParameterTableField.DATA_TYPE_ANY))
         self.addParameter(ParameterVector(self.TARGET_LAYER, "Target point layer", ParameterVector.VECTOR_TYPE_POINT))
         self.addParameter(ParameterTableField(self.TARGET_FIELD, "Target unique ID field", self.TARGET_LAYER, ParameterTableField.DATA_TYPE_ANY))

diff --git a/python/plugins/sextante/algs/ftools/PointsInPolygon.py b/python/plugins/sextante/algs/ftools/PointsInPolygon.py
@@ -53,8 +53,8 @@ class PointsInPolygon(GeoAlgorithm):
     def defineCharacteristics(self):
         self.name = "Count points in polygon"
         self.group = "Vector analysis tools"
-        self.addParameter(ParameterVector(self.POLYGONS, "Polygons", ParameterVector.VECTOR_TYPE_POLYGON))
-        self.addParameter(ParameterVector(self.POINTS, "Points", ParameterVector.VECTOR_TYPE_POINT))
+        self.addParameter(ParameterVector(self.POLYGONS, "Polygons", [ParameterVector.VECTOR_TYPE_POLYGON]))
+        self.addParameter(ParameterVector(self.POINTS, "Points", [ParameterVector.VECTOR_TYPE_POINT]))
         self.addParameter(ParameterString(self.FIELD, "Count field name", "NUMPOINTS"))
 
         self.addOutput(OutputVector(self.OUTPUT, "Result"))

diff --git a/python/plugins/sextante/algs/ftools/PointsInPolygonUnique.py b/python/plugins/sextante/algs/ftools/PointsInPolygonUnique.py
@@ -55,8 +55,8 @@ class PointsInPolygonUnique(GeoAlgorithm):
     def defineCharacteristics(self):
         self.name = "Count unique points in polygon"
         self.group = "Vector analysis tools"
-        self.addParameter(ParameterVector(self.POLYGONS, "Polygons", ParameterVector.VECTOR_TYPE_POLYGON))
-        self.addParameter(ParameterVector(self.POINTS, "Points", ParameterVector.VECTOR_TYPE_POINT))
+        self.addParameter(ParameterVector(self.POLYGONS, "Polygons", [ParameterVector.VECTOR_TYPE_POLYGON]))
+        self.addParameter(ParameterVector(self.POINTS, "Points", [ParameterVector.VECTOR_TYPE_POINT]))
         self.addParameter(ParameterTableField(self.CLASSFIELD, "Class field", self.POINTS))
         self.addParameter(ParameterString(self.FIELD, "Count field name", "NUMPOINTS"))
         self.addOutput(OutputVector(self.OUTPUT, "Result"))

diff --git a/python/plugins/sextante/algs/ftools/PointsInPolygonWeighted.py b/python/plugins/sextante/algs/ftools/PointsInPolygonWeighted.py
@@ -56,8 +56,8 @@ def defineCharacteristics(self):
         self.name = "Count points in polygon(weighted)"
         self.group = "Vector analysis tools"
 
-        self.addParameter(ParameterVector(self.POLYGONS, "Polygons", ParameterVector.VECTOR_TYPE_POLYGON))
-        self.addParameter(ParameterVector(self.POINTS, "Points", ParameterVector.VECTOR_TYPE_POINT))
+        self.addParameter(ParameterVector(self.POLYGONS, "Polygons", [ParameterVector.VECTOR_TYPE_POLYGON]))
+        self.addParameter(ParameterVector(self.POINTS, "Points", [ParameterVector.VECTOR_TYPE_POINT]))
         self.addParameter(ParameterTableField(self.WEIGHT, "Weight field", self.POINTS))
         self.addParameter(ParameterString(self.FIELD, "Count field name", "NUMPOINTS"))
 

diff --git a/python/plugins/sextante/algs/ftools/PolygonsToLines.py b/python/plugins/sextante/algs/ftools/PolygonsToLines.py
@@ -49,7 +49,7 @@ def defineCharacteristics(self):
         self.name = "Polygons to lines"
         self.group = "Vector geometry tools"
 
-        self.addParameter(ParameterVector(self.INPUT, "Input layer", ParameterVector.VECTOR_TYPE_POLYGON))
+        self.addParameter(ParameterVector(self.INPUT, "Input layer", [ParameterVector.VECTOR_TYPE_POLYGON]))
 
         self.addOutput(OutputVector(self.OUTPUT, "Output layer"))
 

diff --git a/python/plugins/sextante/algs/ftools/RandomSelection.py b/python/plugins/sextante/algs/ftools/RandomSelection.py
@@ -60,7 +60,7 @@ def defineCharacteristics(self):
         self.name = "Random selection"
         self.group = "Vector selection tools"
 
-        self.addParameter(ParameterVector(self.INPUT, "Input layer", ParameterVector.VECTOR_TYPE_ANY))
+        self.addParameter(ParameterVector(self.INPUT, "Input layer", [ParameterVector.VECTOR_TYPE_ANY]))
         self.addParameter(ParameterSelection(self.METHOD, "Method", self.METHODS, 0))
         self.addParameter(ParameterNumber(self.NUMBER, "Number/percentage of selected features", 0, None, 10))
         self.addOutput(OutputVector(self.OUTPUT, "Selection", True))

diff --git a/python/plugins/sextante/algs/ftools/RandomSelectionWithinSubsets.py b/python/plugins/sextante/algs/ftools/RandomSelectionWithinSubsets.py
@@ -59,7 +59,7 @@ def defineCharacteristics(self):
         self.name = "Random selection within subsets"
         self.group = "Vector selection tools"
 
-        self.addParameter(ParameterVector(self.INPUT, "Input layer", ParameterVector.VECTOR_TYPE_ANY))
+        self.addParameter(ParameterVector(self.INPUT, "Input layer", [ParameterVector.VECTOR_TYPE_ANY]))
         self.addParameter(ParameterTableField(self.FIELD, "ID Field", self.INPUT))
         self.addParameter(ParameterSelection(self.METHOD, "Method", self.METHODS, 0))
         self.addParameter(ParameterNumber(self.NUMBER, "Number/percentage of selected features", 1, None, 10))

diff --git a/python/plugins/sextante/algs/ftools/ReprojectLayer.py b/python/plugins/sextante/algs/ftools/ReprojectLayer.py
@@ -46,7 +46,7 @@ def defineCharacteristics(self):
         self.name = "Reproject layer"
         self.group = "Vector general tools"
 
-        self.addParameter(ParameterVector(self.INPUT, "Input layer", ParameterVector.VECTOR_TYPE_ANY))
+        self.addParameter(ParameterVector(self.INPUT, "Input layer", [ParameterVector.VECTOR_TYPE_ANY]))
         self.addParameter(ParameterCrs(self.TARGET_CRS, "Target CRS", "EPSG:4326"))
 
         self.addOutput(OutputVector(self.OUTPUT, "Reprojected layer"))

diff --git a/python/plugins/sextante/algs/ftools/SelectByLocation.py b/python/plugins/sextante/algs/ftools/SelectByLocation.py
@@ -54,8 +54,8 @@ def defineCharacteristics(self):
         self.allowOnlyOpenedLayers = True
         self.name = "Select by location"
         self.group = "Vector selection tools"
-        self.addParameter(ParameterVector(self.INPUT, "Layer to select from", ParameterVector.VECTOR_TYPE_ANY))
-        self.addParameter(ParameterVector(self.INTERSECT, "Additional layer (intersection layer)", ParameterVector.VECTOR_TYPE_ANY))
+        self.addParameter(ParameterVector(self.INPUT, "Layer to select from", [ParameterVector.VECTOR_TYPE_ANY]))
+        self.addParameter(ParameterVector(self.INTERSECT, "Additional layer (intersection layer)", [ParameterVector.VECTOR_TYPE_ANY]))
         self.addParameter(ParameterSelection(self.METHOD, "Modify current selection by", self.METHODS, 0))
         self.addOutput(OutputVector(self.OUTPUT, "Selection", True))
 

diff --git a/python/plugins/sextante/algs/ftools/SimplifyGeometries.py b/python/plugins/sextante/algs/ftools/SimplifyGeometries.py
@@ -49,7 +49,7 @@ def defineCharacteristics(self):
         self.name = "Simplify geometries"
         self.group = "Vector geometry tools"
 
-        self.addParameter(ParameterVector(self.INPUT, "Input layer", ParameterVector.VECTOR_TYPE_ANY))
+        self.addParameter(ParameterVector(self.INPUT, "Input layer", [ParameterVector.VECTOR_TYPE_POLYGON, ParameterVector.VECTOR_TYPE_LINE]))
         self.addParameter(ParameterNumber(self.TOLERANCE, "Tolerance", 0.0, 10000000.0, 1.0))
 
         self.addOutput(OutputVector(self.OUTPUT, "Simplified layer"))

diff --git a/python/plugins/sextante/algs/ftools/SumLines.py b/python/plugins/sextante/algs/ftools/SumLines.py
@@ -57,8 +57,8 @@ def defineCharacteristics(self):
         self.name = "Sum line lengths"
         self.group = "Vector analysis tools"
 
-        self.addParameter(ParameterVector(self.LINES, "Lines", ParameterVector.VECTOR_TYPE_LINE))
-        self.addParameter(ParameterVector(self.POLYGONS, "Polygons", ParameterVector.VECTOR_TYPE_POLYGON))
+        self.addParameter(ParameterVector(self.LINES, "Lines", [ParameterVector.VECTOR_TYPE_LINE]))
+        self.addParameter(ParameterVector(self.POLYGONS, "Polygons", [ParameterVector.VECTOR_TYPE_POLYGON]))
         self.addParameter(ParameterString(self.LEN_FIELD, "Lines length field name", "LENGTH"))
         self.addParameter(ParameterString(self.COUNT_FIELD, "Lines count field name", "COUNT"))
 

diff --git a/python/plugins/sextante/algs/ftools/Union.py b/python/plugins/sextante/algs/ftools/Union.py
@@ -208,6 +208,6 @@ def processAlgorithm(self, progress):
     def defineCharacteristics(self):
         self.name = "Union"
         self.group = "Vector overlay tools"
-        self.addParameter(ParameterVector(Union.INPUT, "Input layer", ParameterVector.VECTOR_TYPE_ANY))
-        self.addParameter(ParameterVector(Union.INPUT2, "Input layer 2", ParameterVector.VECTOR_TYPE_ANY))
+        self.addParameter(ParameterVector(Union.INPUT, "Input layer", [ParameterVector.VECTOR_TYPE_ANY]))
+        self.addParameter(ParameterVector(Union.INPUT2, "Input layer 2", [ParameterVector.VECTOR_TYPE_ANY]))
         self.addOutput(OutputVector(Union.OUTPUT, "Union"))
diff --git a/python/plugins/sextante/algs/ftools/UniqueValues.py b/python/plugins/sextante/algs/ftools/UniqueValues.py
@@ -53,7 +53,7 @@ class UniqueValues(GeoAlgorithm):
     def defineCharacteristics(self):
         self.name = "List unique values"
         self.group = "Vector table tools"
-        self.addParameter(ParameterVector(self.INPUT_LAYER, "Input layer", ParameterVector.VECTOR_TYPE_ANY))
+        self.addParameter(ParameterVector(self.INPUT_LAYER, "Input layer", [ParameterVector.VECTOR_TYPE_ANY]))
         self.addParameter(ParameterTableField(self.FIELD_NAME, "Target field", self.INPUT_LAYER, ParameterTableField.DATA_TYPE_ANY))
         self.addOutput(OutputHTML(self.OUTPUT, "Unique values"))
         self.addOutput(OutputNumber(self.TOTAL_VALUES, "Total unique values"))

diff --git a/python/plugins/sextante/algs/ftools/VariableDistanceBuffer.py b/python/plugins/sextante/algs/ftools/VariableDistanceBuffer.py
@@ -55,7 +55,7 @@ def defineCharacteristics(self):
         self.name = "Variable distance buffer"
         self.group = "Vector geometry tools"
 
-        self.addParameter(ParameterVector(self.INPUT, "Input layer", ParameterVector.VECTOR_TYPE_ANY))
+        self.addParameter(ParameterVector(self.INPUT, "Input layer", [ParameterVector.VECTOR_TYPE_ANY]))
         self.addParameter(ParameterTableField(self.FIELD, "Distance field",self.INPUT ))
         self.addParameter(ParameterNumber(self.SEGMENTS, "Segments", 1, default=5))
         self.addParameter(ParameterBoolean(self.DISSOLVE, "Dissolve result", False))

diff --git a/python/plugins/sextante/algs/ftools/VoronoiPolygons.py b/python/plugins/sextante/algs/ftools/VoronoiPolygons.py
@@ -53,7 +53,7 @@ def defineCharacteristics(self):
         self.name = "Voronoi polygons"
         self.group = "Vector geometry tools"
 
-        self.addParameter(ParameterVector(self.INPUT, "Input layer", ParameterVector.VECTOR_TYPE_POINT))
+        self.addParameter(ParameterVector(self.INPUT, "Input layer", [ParameterVector.VECTOR_TYPE_POINT]))
 
         self.addOutput(OutputVector(self.OUTPUT, "Voronoi polygons"))
 

diff --git a/python/plugins/sextante/algs/mmqgisx/MMQGISXAlgorithms.py b/python/plugins/sextante/algs/mmqgisx/MMQGISXAlgorithms.py
diff --git a/python/plugins/sextante/exampleprovider/ExampleAlgorithm.py b/python/plugins/sextante/exampleprovider/ExampleAlgorithm.py
@@ -70,7 +70,7 @@ def defineCharacteristics(self):
 
         # we add the input vector layer. It can have any kind of geometry
         # It is a mandatory (not optional) one, hence the False argument
-        self.addParameter(ParameterVector(self.INPUT_LAYER, "Input layer", ParameterVector.VECTOR_TYPE_ANY, False))
+        self.addParameter(ParameterVector(self.INPUT_LAYER, "Input layer", [ParameterVector.VECTOR_TYPE_ANY], False))
 
         # we add a vector layer as output
         self.addOutput(OutputVector(self.OUTPUT_LAYER, "Output layer with selected features"))

diff --git a/python/plugins/sextante/gdal/ogr2ogr.py b/python/plugins/sextante/gdal/ogr2ogr.py
@@ -62,7 +62,7 @@ def defineCharacteristics(self):
 
         #we add the input vector layer. It can have any kind of geometry
         #It is a mandatory (not optional) one, hence the False argument
-        self.addParameter(ParameterVector(self.INPUT_LAYER, "Input layer", ParameterVector.VECTOR_TYPE_ANY, False))
+        self.addParameter(ParameterVector(self.INPUT_LAYER, "Input layer", [ParameterVector.VECTOR_TYPE_ANY], False))
         self.addParameter(ParameterSelection(self.DEST_FORMAT, "Destination Format", FORMATS))
         self.addParameter(ParameterString(self.DEST_DSCO, "Creation Options", ""))
 

diff --git a/python/plugins/sextante/gdal/ogrinfo.py b/python/plugins/sextante/gdal/ogrinfo.py
@@ -51,7 +51,7 @@ def defineCharacteristics(self):
         self.name = "ogrinfo"
         self.group = "[OGR] Miscellaneous"
 
-        self.addParameter(ParameterVector(self.INPUT_LAYER, "Input layer", ParameterVector.VECTOR_TYPE_ANY, False))
+        self.addParameter(ParameterVector(self.INPUT_LAYER, "Input layer", [ParameterVector.VECTOR_TYPE_ANY], False))
 
         self.addOutput(OutputHTML(self.OUTPUT, "Layer information"))
 

diff --git a/python/plugins/sextante/gdal/ogrsql.py b/python/plugins/sextante/gdal/ogrsql.py
@@ -57,7 +57,7 @@ def defineCharacteristics(self):
 
         #we add the input vector layer. It can have any kind of geometry
         #It is a mandatory (not optional) one, hence the False argument
-        self.addParameter(ParameterVector(self.INPUT_LAYER, "Input layer", ParameterVector.VECTOR_TYPE_ANY, False))
+        self.addParameter(ParameterVector(self.INPUT_LAYER, "Input layer", [ParameterVector.VECTOR_TYPE_ANY], False))
         self.addParameter(ParameterString(self.SQL, "SQL", ""))
 
         self.addOutput(OutputHTML(self.OUTPUT, "SQL result"))

diff --git a/python/plugins/sextante/lidar/lastools/lasclip.py b/python/plugins/sextante/lidar/lastools/lasclip.py
@@ -40,7 +40,7 @@ def defineCharacteristics(self):
         self.name = "lasclip"
         self.group = "Tools"
         self.addParameter(ParameterFile(lasclip.INPUT, "Input las layer"))
-        self.addParameter(ParameterVector(lasclip.POLYGON, "Input polygons", ParameterVector.VECTOR_TYPE_POLYGON))
+        self.addParameter(ParameterVector(lasclip.POLYGON, "Input polygons", [ParameterVector.VECTOR_TYPE_POLYGON]))
         self.addOutput(OutputFile(lasclip.OUTPUT, "Output classified las file"))
         self.addCommonParameters()
 

diff --git a/python/plugins/sextante/taudem/dinftranslimaccum.py b/python/plugins/sextante/taudem/dinftranslimaccum.py
@@ -65,7 +65,7 @@ def defineCharacteristics(self):
         self.addParameter(ParameterRaster(self.DINF_FLOW_DIR_GRID, "D-Infinity Flow Direction Grid", False))
         self.addParameter(ParameterRaster(self.SUPPLY_GRID, "Supply Grid", False))
         self.addParameter(ParameterRaster(self.CAPACITY_GRID, "Transport Capacity Grid", False))
-        self.addParameter(ParameterVector(self.OUTLETS_SHAPE, "Outlets Shapefile", ParameterVector.VECTOR_TYPE_POINT, True))
+        self.addParameter(ParameterVector(self.OUTLETS_SHAPE, "Outlets Shapefile", [ParameterVector.VECTOR_TYPE_POINT], True))
         self.addParameter(ParameterBoolean(self.EDGE_CONTAM, "Check for edge contamination", True))
 
         self.addOutput(OutputRaster(self.TRANSP_LIM_ACCUM_GRID, "Transport Limited Accumulation Grid"))

diff --git a/python/plugins/sextante/taudem/dinftranslimaccum2.py b/python/plugins/sextante/taudem/dinftranslimaccum2.py
@@ -66,7 +66,7 @@ def defineCharacteristics(self):
         self.addParameter(ParameterRaster(self.SUPPLY_GRID, "Supply Grid", False))
         self.addParameter(ParameterRaster(self.CAPACITY_GRID, "Transport Capacity Grid", False))
         self.addParameter(ParameterRaster(self.IN_CONCENTR_GRID, "Input Concentration Grid", False))
-        self.addParameter(ParameterVector(self.OUTLETS_SHAPE, "Outlets Shapefile", ParameterVector.VECTOR_TYPE_POINT, True))
+        self.addParameter(ParameterVector(self.OUTLETS_SHAPE, "Outlets Shapefile", [ParameterVector.VECTOR_TYPE_POINT], True))
         self.addParameter(ParameterBoolean(self.EDGE_CONTAM, "Check for edge contamination", True))
 
         self.addOutput(OutputRaster(self.TRANSP_LIM_ACCUM_GRID, "Transport Limited Accumulation Grid"))

diff --git a/python/plugins/sextante/taudem/dropanalysis.py b/python/plugins/sextante/taudem/dropanalysis.py
@@ -70,7 +70,7 @@ def defineCharacteristics(self):
         self.addParameter(ParameterRaster(self.D8_FLOW_DIR_GRID, "D8 Flow Direction Grid", False))
         self.addParameter(ParameterRaster(self.PIT_FILLED_GRID, "Pit Filled Elevation Grid", False))
         self.addParameter(ParameterRaster(self.ACCUM_STREAM_SOURCE_GRID, "Contributing Area Grid", False))
-        self.addParameter(ParameterVector(self.OUTLETS_SHAPE, "Outlets Shapefile", ParameterVector.VECTOR_TYPE_POINT, False))
+        self.addParameter(ParameterVector(self.OUTLETS_SHAPE, "Outlets Shapefile", [ParameterVector.VECTOR_TYPE_POINT], False))
         self.addParameter(ParameterNumber(self.MIN_TRESHOLD, "Minimum Threshold", 0, None, 5))
         self.addParameter(ParameterNumber(self.MAX_THRESHOLD, "Maximum Threshold", 0, None, 500))
         self.addParameter(ParameterNumber(self.TRESHOLD_NUM, "Number of Threshold Values", 0, None, 10))

diff --git a/python/plugins/sextante/taudem/gridnet.py b/python/plugins/sextante/taudem/gridnet.py
@@ -61,7 +61,7 @@ def defineCharacteristics(self):
         self.group = "Basic Grid Analysis tools"
 
         self.addParameter(ParameterRaster(self.D8_FLOW_DIR_GRID, "D8 Flow Direction Grid", False))
-        self.addParameter(ParameterVector(self.OUTLETS_SHAPE, "Outlets Shapefile", ParameterVector.VECTOR_TYPE_POINT, True))
+        self.addParameter(ParameterVector(self.OUTLETS_SHAPE, "Outlets Shapefile", [ParameterVector.VECTOR_TYPE_POINT], True))
         self.addParameter(ParameterRaster(self.MASK_GRID, "Mask Grid", True))
         self.addParameter(ParameterNumber(self.THRESHOLD, "Proportion Threshold", 0, None, 100))