Error on Preview - Invalid variant operation

rbuser

When I attemt to preview one of my reports I get an error dialog:
Error
Cannot generate report
Invalid variant operation
[OK]

How can I find what is causing this problem? I don't have a clue where to
look.

It also prevents me from closing the report designer and the only way out of
it is to close the project.

Thanks for any assistance,

-Johnnie

rbuser

Hi Johnnie,

I guess you are doing some calculations with NULL values.
When you call the report inside the designer it will stop and show you where
the calculation fails.

HTH,
Chris Ueberall;

rbuser

What calculations can I be doing with NULL values in the report designer? I
assumed all calculations were done only at run-time. Even with that, I
commented out every bit of code in the form I have the report placed on and
the error persists.

I assume there is something wrong with the report storage. I tried saving
to a file and reloading and again, the error persists.

-Johnnie

rbuser

Johnnie,

RAP and TppVariable's calculation might fail.
You should use the designer in runtime environment.

regards,
Chris Ueberall;

rbuser

handled via private email. (patches send for D6 SP2, variant changes)