> waiting in: try to go in the ui dir and do "make" or "make > ConfigForm.h" and then continue I'm sorry, but this doesn't solve the problem. There still remain empty files: -rw-r--r-- 1 ce users 0 26. Mai 12:55 ConfigForm.cpp -rw-r--r-- 1 ce users 0 26. Mai 12:55 ConfigForm.h -rw-r--r-- 1 ce users 0 26. Mai 12:55 ConfigForm_moc.cpp -rw-r--r-- 1 ce users 99470 18. Mai 16:24 ConfigForm.ui -rw-r--r-- 1 ce users 42319 18. Mai 16:26 InstrumentTunerForm.ui -rw-r--r-- 1 ce users 8949 26. Mai 12:53 Makefile -rw-r--r-- 1 ce users 289 7. Jan 05:14 Makefile.am -rw-r--r-- 1 ce users 8830 26. Mai 06:51 Makefile.in Make is voodoo :) . Best regards ce