I have installed GUI 7.20 including the latest patch, but no improvement.
I also found out that running jobs from 4.0 does not work. BODS 3.1 works perfect. See also topic:
It is only that SAP system. But no clue at all what to look at. I would say an authorization issue, but why BODS 3.1 is working then?
Johannes Vink 
(BOB member since 2012-03-20)