[I've got two copies of the fatal message now]. Karl M Hegbloom <karlheg(a)inetarena.com&gt; writes: ... sb> No core, only the cryptic: sb> xemacs: Fatal I/O Error 14 (Bad address) on display connection sb> ":0.0" sb> after 588762 requests (588760 known processed) with 0 events sb> remaining. sb> xemacs: Fatal I/O Error 14 (Bad address) on display connection sb> ":0.0" sb> after 12015 requests (12007 known processed) with 2 events sb> remaining. On Jareth Hein's advice, I upgraded libpng to the latest on uunet. However, it only fixed the odd colors I was seeing. Upon a few operations after reviewing Karl's message, XEmacs died again the same way: xemacs: Fatal I/O Error 14 (Bad address) on display connection ":0.0" after 19999 requests (19997 known processed) with 1 events remaining. No core, no other message. ... I got it thanks. I've got two copies now. Even with the PNG upgrade it is every bit as deadly as it was with the older PNG.