Problems with REFEDIT in v9...

I am having problems related to using REFEDIT to edit external reference files.I attach as overlay.The program crashes when using REFEDIT. I have been unable to identify any pattern related to the crashes. Sometimes while working with entities in the reference file, sometimes saving and closing REFEDIT, sometime as soon as I select the reference file for editing.There is nothing repeatable and no particular file or file pair that trigger the crashes. The crashes never seem to occur when the software is first started, only after working a lot.I have filed a support request (17633) but it has been closed because it is not repeatable.Has anyone else been experiencing similar behaviour?Perhaps the problem is actually isolated to me and my particular installation.Regards,Greg