Hello Doru, I am trying jdt2famix by creating a binary release from sources. After creating the binary release, I run it on jfreechart (version: 54eeb32a0bbf61db346fa3d37ef94a00b9747b1c), and I have the following exception. obs: it works if I download and use "Release 1.0.3". ======== Script =========== git clone https://github.com/girba/jdt2famix.git cd jdt2famix ./release.sh cd .. git clone https://github.com/jfree/jfreechart.git cd jfreechart/ git reset --hard 54eeb32a0bbf61db346fa3d37ef94a00b9747b1c ../jdt2famix/release/jdt2famix.sh ========= Exception ======== 16:46:07 - importing file - 0163/1010 - /Users/andrehora/Desktop/ jfreechart/src/main/java/org/jfree/chart/fx/ChartCanvas.java Exception in thread "main" java.lang.NullPointerException at com.feenk.jdt2famix.injava.InJavaImporter.createAccessFromVariableBindin g(InJavaImporter.java:768) at com.feenk.jdt2famix.injava.InJavaImporter.createAccessFromExpression( InJavaImporter.java:760) at com.feenk.jdt2famix.injava.AstVisitor.visit(AstVisitor.java:454) at org.eclipse.jdt.core.dom.Assignment.accept0(Assignment.java:309) at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711) at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2759) at org.eclipse.jdt.core.dom.ExpressionStatement.accept0( ExpressionStatement.java:145) at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711) at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2782) at org.eclipse.jdt.core.dom.Block.accept0(Block.java:137) at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711) at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2759) at org.eclipse.jdt.core.dom.MethodDeclaration.accept0( MethodDeclaration.java:635) at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711) at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2782) at org.eclipse.jdt.core.dom.TypeDeclaration.accept0( TypeDeclaration.java:470) at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711) at org.eclipse.jdt.core.dom.ASTNode.acceptChildren(ASTNode.java:2782) at org.eclipse.jdt.core.dom.CompilationUnit.accept0( CompilationUnit.java:212) at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711) at com.feenk.jdt2famix.injava.AstRequestor.acceptAST(AstRequestor.java:30) at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve( CompilationUnitResolver.java:1029) at org.eclipse.jdt.core.dom.CompilationUnitResolver.resolve( CompilationUnitResolver.java:636) at org.eclipse.jdt.core.dom.ASTParser.createASTs(ASTParser.java:990) at com.feenk.jdt2famix.Importer.run(Importer.java:39) at com.feenk.jdt2famix.injava.Main.main(Main.java:30) -- Andre Hora