qt-4.5.0_rc1 seems to trigger a bug that exist in kompare making it to crash everytime you try to use it. Reproducible: Always Steps to Reproduce: 1.emerge qt-4.5.0_rc1 and kompare 2.run kompare 3.select two files in the dialog that appears and press the compare button 4.enjoy the crash! :-) I have taken the patch from the official svn of kde and created an appropriate ebuild to use the patch. Here is the link: http://websvn.kde.org/?view=rev&revision=924539
Created attachment 182168 [details] kompare-4.2.0-r1.ebuild
Created attachment 182172 [details, diff] komparemodellist.cpp.patch
Fixed on CVS. Thanks for reporting :)