Chart legend shows database field instead of value

Hi,
I would like to understand the behavior of the charts legend, which sometimes display the field values as requested, but sometimes display the database field name starting with a @.
We develop Crystal Reports and then generate them via an application. We have many releases of our application and therefore we get to work with Crystal versions 10, XI, XIr2 and 2008.
In all cases, the legend display is correct when in the Crystal Reports Designer preview mode. However when generated through our application (using ADO.NET), depending on the Crystal runtime version (apparently) the result varies. Editing the legend label in preview mode doesn't resolve the issue.
Is this behavior related to :
- Crystal Reports runtime (it appears to happen only with Crystal Reports runtimes XIr2 and 2008 in our case) ?
- Using formula fields in the chart instead of database fields directly ?
- Evaluation time (our charts are in Report Header and/or Group Header) ?
- any other idea ?
Thank you very much
Anthony

We have been able to detect that the Language Regional Settings of Windows XP Pro has a direct effect on our charts legend display.
We noticed that when the Regional Settings were set to English, the report would generate correctly and chart legends would display values, and not database fields names. However, when the regional settings are set to another language (tried French, Dutch, Spanish and German) the problem occurs.
Using Process Monitor we have spotted that when in Regional Settings other than English it was still the English dll that were called (crdb_adoplus_res_en.dll)...
The problem occurs with Crystal runtimes XIr2 and 2008 only. We use Crystal Reports in an application, using ADO.NET connector, and we use the Crystal runtime to generate reports.
Is this a bug or is there a workaround to make sure the correct dll are called according to regional settings ?
Thank you for your kind assistance.
Best regards,
Anthony

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