I am running fedora core 9 on a 64-bit machine, and installed lyx-1.5.6-2.fc9.x86_64.
Lyx crashes at the start with the following report: QPaintEngine::setSystemClip: Should not be changed while engine is active QPaintEngine::setSystemClip: Should not be changed while engine is active QWidgetPrivate::beginSharedPainter: Painter is already active QWidgetPrivate::endSharedPainter: Attempting to end a null painter QPaintEngine::setSystemClip: Should not be changed while engine is active QPaintEngine::setSystemClip: Should not be changed while engine is active QWidgetPrivate::beginSharedPainter: Painter is already active lyx: SIGSEGV signal caught Sorry, you have found a bug in LyX. Please read the bug-reporting instructions in Help->Introduction and send us a bug report, if necessary. Thanks ! Bye. Aborted I have not seen this bug reproted on the web, so I take the liberty to write to you. Note that we also have a 32-bit machine with Fedora Core 9, on which lyx is running perfectly. Hoping you can fix this bug in future versions, or tell me what is wrong with my machine. Sincerely yours, J.R. Cudell