Comment 15 for bug 469365

I am having the same issue, also with mouse-grab, using jack or oss, with the provided audio file, above, and no file loaded, or any other. Same issue with compiz enabled or disabled. Here is the full error displayed in term:

The program 'terminatorX' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadAccess (attempt to access private resource denied)'.
  (Details: serial 7 error_code 10 request_code 2 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.)

because of "access private resource denied" I tried running as root, just to see if perms were the issue. Same thing happened.