Serial 493 error_code 11 request_code 153 minor_code 3

Hi,

My name is vivek. when I was working with gnuradio-companion, I could
able to run any flow graph. I dont know what changes I have made. I have
paste the error below… can you please kindly advise me what is the
problem with this?

The program ‘python2.6’ received an X Window System error.
This probably reflects a bug in the program.
The error was ‘BadAlloc (insufficient resources for operation)’.
(Details: serial 493 error_code 11 request_code 153 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.)