Jan Vroonhof <vroonhof(a)math.ethz.ch&gt; writes: I can reproduce this with you're last message... This does *not* sound good. Perhaps I could get the event-loop of OffiX integrated into the event-loop of XEmacs, but... If a drag is started, OffiX garbs the X pointer (i.e. all events go to XEmacs). Now it does a loop, and looks for a button-release. If the event is no button-release, it handles the event via XtDispatchEvent. And this must be the position where the dump is produced... The loop is starts in offix.c at line 125 in DndHandleDragging. I will start picking around in this problem, but it's to late now... tomorrow I will have time to fix it (I hope I can pinpoint the problem -- I'm crateful for further hints). Regards, Oliver.