GTK관련 에러입니다... 도와주세요

GTK로 그래프를 그리는 프로그램입니다.. 잘 되다가 가끔 아래와 같은 에러메시지를 보여주고는 죽네요... gdk관련 에러라는건 알겠는데 정확하게 어떻게 해야할지 모르겠습니다... 도와주세요..

The program 'MyG' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadLength (poly request too large or internal Xlib length erro'.
(Details: serial 161895 error_code 16 request_code 4 minor_code 0)
(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.)