Unifab 2.0.1.7. is completely unusable!!! Even after a downgrade to the previous version 2.0.1.6 the same error accurs. Only a restore from my previous harddisk backup, where UniFab 2.0.1.6. was installed, solved the problem. Now I can use version 2.0.1.6 again. So I am sure,that version 2.0.1.7 has problems.