>>That's the problem. It's a REAL sucky error routine that routinely gives the wrong line number, method, etc. This error message gave Line Number: 0, method presavehook.
>>
>>Now, presavehook has one line dodefault() and none of the parent objects have any code in the method.
>>
>>
>I think I had similar problems with MM. I need to find some code later that was improved Error Handler for MM.

BTW, I think the problem may be happening in RI code (or record validation) if you have it.