This error occurs when working with a recently modified shapefile or table:"Assertion Old Rec = 0, failed at line 741 of file ../vtab/vtab.c"
This happens when you attempt to do something to a record that has been deleted. For example, an Avenue application may cause this error when the script encounters an unanticipated state in the data.
Review the Avenue code. Look for cases where you should stop editing before attempting the action that caused this error.
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