diff --git a/build.gradle b/build.gradle
index 7d323dd6..ff15b719 100644
--- a/build.gradle
+++ b/build.gradle
@@ -4,7 +4,7 @@ apply plugin: 'idea'
 
 
 group = 'cz.siret'
-version = '2.0'
+version = '2.0.1'
 
 description = 'Ligand binding site prediction based on machine learning.'
 
diff --git a/src/main/groovy/cz/siret/prank/domain/Dataset.groovy b/src/main/groovy/cz/siret/prank/domain/Dataset.groovy
index f585dbeb..272b3ddc 100644
--- a/src/main/groovy/cz/siret/prank/domain/Dataset.groovy
+++ b/src/main/groovy/cz/siret/prank/domain/Dataset.groovy
@@ -118,7 +118,7 @@ class Dataset implements Parametrized {
     }
 
     Item createNewItem(Map<String, String> columnValues) {
-        String proteinFile = dir + "/" + columnValues.get(COLUMN_PROTEIN)
+        String proteinFile = dir + "/" + columnValues.get(COLUMN_PROTEIN)    // bug!dir==null
         String predictionFile = null
         if (header.contains(COLUMN_PREDICTION)) {
             predictionFile = dir + "/" + columnValues.get(COLUMN_PREDICTION)
@@ -436,7 +436,7 @@ class Dataset implements Parametrized {
 
     Dataset(String name, String dir) {
         this.name = name
-        this.dir = dir
+        this.dir = dir  ?: "."  // safeguard for github#7
     }
 
      /**
@@ -468,7 +468,8 @@ class Dataset implements Parametrized {
 
         log.info "loading dataset [$file.absolutePath]"
 
-        Dataset dataset = new Dataset(file.name, file.parent)
+        String dir = file.parent ?: "." // fix for bug github#7
+        Dataset dataset = new Dataset(file.name, dir)
 
         for (String line in file.readLines()) {
             line = line.trim()