Design Studio 1.2 Variable Prompts

Hi,

i'm having a Problem with DS 1.2 variable prompts.

My App uses a BW query with a not-mandatory Date-variable.

I'm using a button to open the prompt.

When Setting new Filters or Change the selection, everything works fine.

But if we open the prompt and Close it without changing anything we are getting the error:

ABEND RSBOLAP (000): Program error in class SAPMSSY1 method : UNCAUGHT_EXCEPTION

MSGV1: SAPMSSY1

MSGV3: UNCAUGHT_EXCEPTION

The error only seems to occur, if we are using a hierarchy (just in the query not as variable).

We are running Design Studio on SAP BW 7.40 SP03.

Does anybody know a solution for this error?

Thanks,

Michael