Hi @Frances O'Brien? are you able to share some further details so we can understand more about the context, things like:
- Typically what sort of thing are you doing when the error occurs?
- Version of MapInfo Pro?
- Is the error consistent (does it happen every time you have the same action/conditions)? Is it dependent on a particular dataset or function?
This will help to isolate the cause of the issue. We look forward to your update.