Comment 1 for bug 474954

The error message was:

The program 'inkscape' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadDevice, invalid or uninitialized input device'.
  (Details: serial 507108 error_code 146 request_code 140 minor_code 30)
  (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
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)

This is with Inkscape 0.46 (Apr 8 2009), on Ubuntu Jaunty, x64.