Photoshop CS4 "Could not complete your request because of a program error"

I found that knowledge-base article and did every step in it...

I even went beyond... I deactivated CS4, completely uninstalled using AppZapper and then manually went through and tossed every adobe pref file in both users and in system.

I then reinstalled CS4 from scratch, reactivated, and exact same issue. It happens when running in both the 32, and 64 bit kernel as well.

It's so odd too... it runs fine for around 40 seconds. I can open a doc, add type, but then that annoying error pop-up comes and it gets stuck in a loop. I can only click on 'OK', which just makes the error window open again. And again, again, etc... you can't escape. The only way to quit is to 'force quit'.

A A P L, if you hate to run salt in the wound, why did you?

I installed 10.6 because it is listed as having 100% CS4 compatibility and Adobe and Apple worked together on making sure that was the case. There isn't a single thread in Adobe's forums for this issue regarding snow leopard.

And that said, I installed a new OS which killed my App, not the other way around. I'm posting in the right place. But thanks anyway, I guess?

I understand... I don't think anyone else is having this issue.

I am convinced this is a font or type issue. I can open Photoshop and work for as long as I'd like, provided I do not open the Character Palette, or select the font tool.

Once I do either of those, this error cycle is created. I am trying to figure out how to turn off 2550 fonts and only leave the system fonts in place to see if this helps. But, again, this is no easy task.

I validated all of my fonts in Font Book - they call check out fine. No duplicates, no errors.

I created a new user account, and Photoshop runs fine in that with all fonts activated. Crazy.

Any ideas, other than a 'Archive and Install'?

Good call. That did it. The font cache was corrupt. Nice suggestion! Started in safe mode by shutting down, hitting the power button, wait for the chime, hold down 'Shift'. It started in Safe Boot. Then I restarted normally.

After that - Font Book was able to verify 6 corrupted fonts, but even before that Photoshop launched and stayed open, AND as an added benefit the type list loaded WAY faster.

Thanks!