Running SLES 10 sp3 & OES2 sp3 & GW 8.0.2 hp1

When trying to create a new PO there is a error message about the system not able to access the SDD. In C1 I have check and re-installed the SDD etc. If I continue the install another message pops up saying that the PO is not available until I refresh the views from the System Maintenance Menu, but still no joy.

Any idea ....