Thanks for the reply. I should have noted I am on a Mac. Also I don't have Bridge open or set to auto open. I also tried manually downloading the updates from Adobe, doing a shut down and restart then running them on their own. Also ran disk and permissions repair. Still no joy. Apparently they are now saying this is a known issue and are working on it. At least this is what customer service told me after they talked to tech support. Then again the customer service agent said he hadn't seen Photoshop or know anything about it. I was told they would contact me again in 4 to 5 days.
Which version of Mac are you using? And you did not state which Mac you have.
I'm not much help, except to state that I updated CS5 while on 10.6.3 with no problems on a late 2009 Macbook pro. It also appears to work ok on 10.6.4 ... I beleive one of the posts I read somewhere it that CS5 updates only work on Intel based Macs. Don't quote me on this.