This evening xchat-gnome decided it didn't want to open for me. Running in bash produced:


The program 'xchat-gnome' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadImplementation (server does not implement operation)'.
(Details: serial 548 error_code 17 request_code 145 minor_code 5)
(Note to programmers: normally, X errors are reported asynchronously;
that is, you will receive the error a while after causing it.
To debug your program, run it with the --sync command line