Karl Kleinpaste <karl(a)justresearch.com&gt; writes: I have just discovered that our sysadmins have replaced the stock redhat X11 with a link to /usr/local I am also seeing xemacs: X Error of failed request: BadValue (integer parameter out of range for operation) Major opcode of failed request: 12 (X_ConfigureWindow) Value in failed request: 0x0 Serial number of failed request: 5089 Current serial number in output stream: 5295 xemacs: X Error of failed request: BadValue (integer parameter out of range for operation) Major opcode of failed request: 12 (X_ConfigureWindow) Value in failed request: 0x0 Serial number of failed request: 5090 Current serial number in output stream: 5295 Could it be that your version calls exit() whereas my version actually tries to set the 0 sizes? I was talking about http://www.xemacs.org/list-archives/xemacs-patches/9912/msg00048.html which isn't in any non CVS version I can see. Jan