Prompt with List of Values Error BI 4.1 SP3

Hi,

I have a report that uses a .UNX universe. When I add a new prompt to the report and select 'Prompt with list of values' in the prompt properties window and run the query then I get an error. The error message is:

Invalid Prompt definition. (IES 00005) (Error: INF)

If I edit the prompt and deselect 'Prompt with list of values' the report runs fine and I can add my prompt value. However I require the list of values to be shown for the prompt.

Has anyone else seen this and can anyone offer an explanation and/or a solution?

Thanks,

Chris