Please do a forum search. I and others have repeatedly answered this question a whole bunch of times recently.
Bottom line: the Adobe auto updater is utterly useless in CS5 and prior versions. You need to download the updates and apply them manually yourself.
I and others have even supplied the links for Mac and Win, which you haven't even bothered to specify.
Thanks for getting back to me. Yes, I did read and TRY everyone's solutions….. I tried updating Adobe Auto updater and I tried updating Camera Raw and Photoshop cs5 manually. Nothing worked. I did a different error message.
Maybe I did not update manual in the correct way. Can you run me through the steps?
Sorry, I don't have time to do "steps", but there are precise instructions on the download page of each update, follow them to the letter.
Don't waste your time with "updating Adobe Auto updater", I already told you it's a useless piece of cr@p in CS5 and prior versions. The idea of updating manually is exactly to bypass the p.o.s. auto updater.