Comment 13 for bug 948178

inkscape --version
Inkscape 0.48.2 r9819 (Jul 11 2011)

same
The error was 'BadMatch (invalid parameter attributes)'.
  (Details: serial 49281 error_code 8 request_code 140 minor_code 3)
  (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.)

will report that to the inkscape project too