> Thanks, i should have mentioned i have tqtinterface installed before > compiling arts but still get this error. I receive no error when building > tqtinterface. Hi again Ok, it can be already installed but it is not found. You can realize this from the below command "/opt/kde3/lib/qt3/bin/moc ./qiomanager_p.h qiomanager_p.moc" For example this same command for Pardus Corporate 2 is "usr/bin/tqt-moc /usr/qt/3/bin/moc ./qiomanager_p.h qiomanager_p.moc". You can try this command by hand giving absolute paths for tqt-moc and moc. So now you should make some change in your makefile or acinclude file to find your tqt-moc executable's path.