Not sure of relevance: We had a “problem” with our initial SAP install – the “ENJOY” Setting was enabled.
This is a flag in the Current User registry (Software – SAP – ENJOY) … once turned on (Value = 1), the ENJOY setting allowed extra features such as Themes, Backgrounds, Sound Schemes, etc. … We disabled the features to improve system performance.
Try turning on the ENJOY flag .. launch SAP and see if you get the extra options to update your background.
Hope this helps …