Open SQL Data Browser error User is not authorized to read table

Hi Experts,

we are on NW Portal 7.30 EHP1 SP5 and want to use the Open SQL Data Browser in NWA with the administrator user. Appropriate Roles and Actions as descriped in SAP Help were asigned.

But no matter what table we select in the screen, we always get the error "User is not authorized to read table <TABLENAME>"

We found SAP note 1748559  which exacly discribes that behavoir and of course we've implemented it.

Perhaps anybody can help me to get work with this tool.

Thanks a lot!

Christian