Install 10.8.2 from 10.8

Any ideas.

I have a late 2008 with 10.8 already installed no problems. When i try to go to 10.8.1 and or use the 10.8.2 combo neither work. Using the software update shows no updates available. I downloaded the 10.8.2.combo and tried to run it locally and i get the error about "OSX Update Combo can't be installed on this disk. The Volume does not meet the requirements for this update." I should mention this happens whether i try the 10.8.1 or the combo. I have also ran the disk utility and the verify shows all is good. I have a 500GB HDD with 93% available.

See attachments.

Any help is appreciated.

Joe