When you send us a bug report, please list your configuration. You can find this info in the "About PythonCard..." option under the "Debug" menu if you run a sample with any of the runtime options enabled like the shell or message watcher. The simplest way to get these without resorting to the command-line is just to run the turtle sample which uses the shell and so always has a Debug menu.
Here's an example copied from the dialog, you can do the same when you post bug reports.
PythonCard version: 0.6.5 wxPython version: 18.104.22.168 PyCrust version: 0.7.2 Python version: 2.1.1 (#20, Jul 26 2001, 11:38:51) [MSC 32 bit (Intel)] Platform: win32
The dialog doesn't currently show whether you're running a normal or hybrid version of wxPython and I don't know whether it is possible for that to be determined at runtime, so just append "hybrid" on the end of the wxPython line if that's what you're using.
The platform item doesn't show the specific OS, which again would be difficult to determine, so you can be more explicit there by saying Linux Red Hat 7.2, Win98 SE, Win2K SP2, etc. SP is short for service pack.