Conditional formatting c#.NET "Unknown Query Engine Error"

[Danokim]

I have a report I created in Crystal Reports 8. It has VERY simple conditional formatting which works fine in the stand alone Crystal Reports designer.
The formula is:
If Mid ({Field}, 1, 4) = "BOLD" Then
crBold
That formula is a conditional format forumula on the style of a database field.

Now the application is a c# fat client. When I call that report it gives a "Unknown Query Engine Error".
If I remove the conditional formatting, and call the report with the identical selection criteria, it will populate and display correctly.

Does anyone have any thoughts/ideas as to what is occurring?

 

[Danokim]

Anyone have any thoughts?

I did initially create the report in CR 8 against a view but later changed it to point to a TTX file.