#57 freezes while launching

[Matthias]

violet 2.0.1
When I run violet via cmdline, I only get a white screen, nothing more happens.

violet --debug said:

java.io.IOException: Unable to locate file
at com.horstmann.violet.framework.file.LocalFile.init(LocalFile.java:44)
at com.horstmann.violet.framework.file.LocalFile.<init>(LocalFile.java:24)
at com.horstmann.violet.UMLEditorApplication.createDefaultWorkspace(UMLEditorApplication.java:166)
at com.horstmann.violet.UMLEditorApplication.<init>(UMLEditorApplication.java:111)
at com.horstmann.violet.UMLEditorApplication.main(UMLEditorApplication.java:99)
, then it freezes.