Photoshop CS4 gives amtlib.dll problem after system restore

[alancsalt]

It is a legal copy.
I did Win 7 SP update over a 3G connection, and it messed up badly. I did a system restore, but now Photoshop CS4 will not open. Gives this:

Application Version: 11.0.2.0
Application Timestamp: 4bf2d91c
Fault Module Name: amtlib.dll
Fault Module Version: 2.0.1.10077
Fault Module Timestamp: 488fb154
Exception Code: c0000005
Exception Offset: 0000000000037e58
OS Version: 6.1.7600.2.0.0.256.48
Locale ID: 3081
Additional Information 1: 1258
Additional Information 2: 12584be4219ae44c0462ea59aa42de09
Additional Information 3: f4a2
Additional Information 4: f4a21ed565edf710beed504b077038c2

I would uninstall and reinstall, but how can I deactivate. "Help" in associated CS4 apps does not have the deactivation option, or not that I can find so far.

Anyone have any idea what I should do?

[admin]

Did you try Resetting Photoshop Preferences?

[alancsalt]

Yes. No prompt. No change. Just "Photoshop has stopped working"

I am thinking I shall probably have to do deactivation by phone along with a win 7 reinstall given the number of other problems that have arisen from my failed Windows Service Pack install.

[admin]

If you have only activated this once before, you can activate it again after an uninstall/re-install of just Photoshop. If it doesn't work you can just give Adobe a call and they will help you sort out activation.