datagrid prevents opening stack

[Jim Lambert]

Trevor,

Datagrids containing a large amount of data will prevent subsequent  
opening of that stack.
So I always uncheck persistent data.
However today I saved a stack that had a datagrid with data and even  
though persistent data was unchecked now I can't open the stack.

Is there any magic way to recover that stack or is it unretrievable now?

Should one ALWAYS uncheck persistent data and ALWAYS empty a grid  
before saving?

Thanks,
Jim Lambert