Hello Herr Maier! Tammy,
I cannot check right now, but there should be a new setting where you specify if the WB should be saved to the BI platform as excel (4.0 behavior), or as a new Analysis type (4.1). I think this new Info Object (not to be confused with BW infoObject) will come with a patch for BI4.1, so currently I don't think you can use it.
Herr Maier's error message to me sounds like AO is trying to save the WB with the new type to a Platform that does not support it yet. Can you check that also?
Best regards,
Victor