Strange message at launch, then acrobat quits

You'll need to activate CS3 with an application other than Acrobat because Acrobat 8 contains a slightly different version of our Activation technology. Here is a [url=http://kb.adobe.com/selfservice/viewContent.do?externalId=kb400786&sliceId=1]technical note[/url] with additional information.

Thanks for your suggestion.

I activated CS3, and I am still getting the same message. The odd thing is that only a few days ago it was working perfectly. Also, Distiller is no not doing what it's supposed to. When I make PDf's it offsets the image on the page. I tel it to centre the image on the page and it places roughly 1/3 off the page.

Does this make any sense?

Did you attempt to Activate while in Acrobat or another CS3 application? Under the Help menu is Deactive listed as an option?

I had quit Acrobat and tried Photoshop (nothing happened,) Illustrator and Flash (quit/crashed,) finally Dreamweaver, which worked.

Deactivate is not an option in Acrobat, is greyed out in Photoshop (along with activate, regustration and updates) and available in InDesign (activate isn't.)

What version of Acrobat "and" OS are you running?

Acrobat 8.1.2 Professional and Mac OS 10.5.4

Do you have any problems running the applications if you create a new user? Have you tried deleting your Preferences?

I tried that and I got a slightly longer delay before the same message came up. Nothing seems to work, I think I'm going to have to re-install it.