Added a prompt to a column date conversion in Universe now getting WIS 30270

An internal error occurred while calling 'processDPCommandsEx' API. (Error: ERR_WIS_30270) (WIS 30270)

When I return a date column that has a prompt for a function parameter I get the error above.

ADJUSTMENT.CREATE_DATE AT TIME ZONE @Prompt(Report Time Zone)

If I hard-code the timezone like this, it works.

ADJUSTMENT.CREATE_DATE AT TIME ZONE '-05:00'

Is there any way to make this work?

"Report Time Zone" is a Parameter with a prompt from a LOV with a default value set.

This works in the Query module in IDT but it does not work when using the tables in a Webi report.

We are running on the following version:

SAP BusinessObjects BI Platform 4.1 Support Pack 7

Version: 14.1.7.1853

Any help with this would be greatly appreciated.

Thanks,

Tim