diff --git a/src/IECoreHoudini/GEO_CobIOTranslator.cpp b/src/IECoreHoudini/GEO_CobIOTranslator.cpp
index a539d9aa7b..7e436f250c 100644
--- a/src/IECoreHoudini/GEO_CobIOTranslator.cpp
+++ b/src/IECoreHoudini/GEO_CobIOTranslator.cpp
@@ -148,7 +148,7 @@ GA_Detail::IOStatus GEO_CobIOTranslator::fileSaveToFile( const GEO_Detail *geo,
 		WriterPtr writer = Writer::create( object, fileName );
 		writer->write();
 	}
-	catch ( IECore::Exception e )
+	catch ( IECore::Exception &e )
 	{
 		return false;
 	}
diff --git a/src/IECoreHoudini/NodeHandle.cpp b/src/IECoreHoudini/NodeHandle.cpp
index 714c05b6c1..eb3e8cd724 100644
--- a/src/IECoreHoudini/NodeHandle.cpp
+++ b/src/IECoreHoudini/NodeHandle.cpp
@@ -79,7 +79,7 @@ OP_Node *NodeHandle::node() const
 			return node;
 		}
 	}
-	catch( HOM_ObjectWasDeleted )
+	catch( HOM_ObjectWasDeleted &e )
 	{
 	}
 
diff --git a/src/IECoreHoudini/SOP_OpHolder.cpp b/src/IECoreHoudini/SOP_OpHolder.cpp
index 3a38f2398a..8718728ce2 100644
--- a/src/IECoreHoudini/SOP_OpHolder.cpp
+++ b/src/IECoreHoudini/SOP_OpHolder.cpp
@@ -142,7 +142,7 @@ void SOP_OpHolder::doOperation( IECore::Op *op, const GU_DetailHandle &handle, c
 	{
 		result = op->operate();
 	}
-	catch( boost::python::error_already_set )
+	catch( boost::python::error_already_set &e )
 	{
 		// \todo: libIECoreHoudini should not use python. Determine if
 		// this is still required or if the other catch cases are enough.
diff --git a/test/IECoreHoudini/FromHoudiniCurvesConverter.py b/test/IECoreHoudini/FromHoudiniCurvesConverter.py
index 539d5811fb..5fef4186f2 100644
--- a/test/IECoreHoudini/FromHoudiniCurvesConverter.py
+++ b/test/IECoreHoudini/FromHoudiniCurvesConverter.py
@@ -56,7 +56,11 @@ def createCurve( self, order=2, periodic=False, parent=None, coordIndex=0 ) :
 			obj = hou.node("/obj")
 			parent = obj.createNode("geo", run_init_scripts=False)
 
-		curve = parent.createNode( "curve" )
+		if hou.applicationVersion()[0] >= 19 :
+			curve = parent.createNode( "curve::" )
+		else :
+			curve = parent.createNode( "curve" )
+
 		curve.parm( "type" ).set( 1 ) # NURBS
 		curve.parm( "order" ).set( order )
 		curve.parm( "close" ).set( periodic )
@@ -510,7 +514,10 @@ def testAllOpenPolygonsConvertedAsLinearCurves( self ) :
 		obj = hou.node( "/obj" )
 		parent = obj.createNode( "geo", run_init_scripts = False )
 
-		curves = [parent.createNode( "curve" ), parent.createNode( "curve" ), parent.createNode( "curve" )]
+		if hou.applicationVersion()[0] >= 19 :
+			curves = [parent.createNode( "curve::" ), parent.createNode( "curve::" ), parent.createNode( "curve::" )]
+		else :
+			curves = [parent.createNode( "curve" ), parent.createNode( "curve" ), parent.createNode( "curve" )]
 		names = [parent.createNode( "name" ), parent.createNode( "name" ), parent.createNode( "name" )]
 
 		curves[0].parm( "type" ).set( 0 )  # polygon
diff --git a/test/IECoreHoudini/ToHoudiniCurvesConverter.py b/test/IECoreHoudini/ToHoudiniCurvesConverter.py
index 9ea3e3c5a2..480ae5b730 100644
--- a/test/IECoreHoudini/ToHoudiniCurvesConverter.py
+++ b/test/IECoreHoudini/ToHoudiniCurvesConverter.py
@@ -178,7 +178,11 @@ def curveSop( self, order=2, periodic=False, parent=None, coordIndex=0 ) :
 			obj = hou.node("/obj")
 			parent = obj.createNode("geo", run_init_scripts=False)
 
-		curve = parent.createNode( "curve" )
+		if hou.applicationVersion()[0] >= 19 :
+			curve = parent.createNode( "curve::" )
+		else :
+			curve = parent.createNode( "curve" )
+
 		curve.parm( "type" ).set( 1 ) # NURBS
 		curve.parm( "order" ).set( order )
 		curve.parm( "close" ).set( periodic )