UWL Configuration Error / Workitem Error

Hello,

i have problems with the UWL Configuration! I tried to add an workflowitem

(Workflowtask: TS90000078) to the xml files, that works,

i import a new file, but now i have an error.

When i click on the workitem in the list, i get the following message in blue:

E:SWF_HTTP:050 TS90000078

and not my bsp-applikation

What could i do!?

Thanks!