I run MOS PUP on my A4000, but I have unsuccessfully gotten OWB (v1.7) to load.
I have a fresh install of MOS 1.4.5 with update pack and MUI4 (beta from 2007). When double clicking the OWB icon I get some disk activity for a little while, then nothing. No errors or anything. It is not supposed to work on my setup? Or probably just too slow for anything anyways.