Hallo everybody!
After using a dynamic selection I get the following error message:

Behind the Label "Mitarbeiter" there is the following database procedure:

In the second step there ist a dynamic selection on a specific cube:

In the third step I see the right numbers of employees and I can choose one or more employees.

After using the button "selection" the error message will appear and the selection doesn't work.
I also found out that sometimes the selection does work.
Wenn I use the Win-Client the selection works fine at every time.
I attched the Weblogfile.
Does anybody have the same problem?