Photoshop CS1 wont open anything - big issues!

Question

Hi
Photoshop has started to do an odd thing ...and I am in crisis as I am a photographer and kind of need it!
It will not open ANY image file, of any size, or any time via any opening method - double clicking on the file, dragging onto the dock icon, using Finder and File Menu>Open or going into P/Shop and using File Menu>Open.
Photoshop opens fine and does all the usual things when opening an image file - it even gives me the dialogue box when the Colour Settings do not match the work space.
Then, every time it gives me a message saying: "Could not complete your request because of a program error".
It give the same message if I try to create a new file within P/Shop.
Thus far I have:
- Repaired disk permissions
- Binned P/Shop prefs
- Uninstalled and re-installed the whole of Creative Suite 1 (!!!)
- Tried a new user account and the problem was the same.
- I read about needing to put "Adobe Unit Types" File into a folder called "ScriptingAdditions" at HD/Library/ScriptingAdditions. (This was already there, but I tried an old version from an archived OS 10.4.4, and then downloaded a new version of it from the web and tried that).
- Put this file in every library I could find on the Mac (that was out of desperation!).
- Restarted about a billion times.
- Checked Adobe.com for updates and help.
- Added any available updates for CS1
-Trawled the web for hours looking for a solution.
- Disconnected from the internet while opening a file (As Adobe suggested - like that it gonna do anything?!?!?)
- run /sbin/fsck -uy at the command prompt after starting up in single user mode.
- Torn my hair out
- Sworn a lot.
- Wondered why the **** I spent sooooo much money on Creative Suite!
-Resisted temptation to put foot through monitor
Frankly, I think I have done pretty much everything possible and am clean out of ideas - any thoughts anyone?
My info - OS 10.4.7, Photoshop CS1 (Part of Creative Suite CS1).
This has only happened since I installed OS update to 10.4.7
Please help!
Thanks
Rob

Answer 1

I personally have found that sometimes it's harder to isolate things once I have been mucking about so much (and being so frustrated.) I have found that buying a firewire external drive and re-installing the OS fresh and creating one account and only installing that one app almost always works.
I can then limp along and migrate settings or file an honest bug report that states so simply that the only things there are Mac and Application X that it's easy to find a solution or get back to work.
Sorry it's probably not what you wanted to hear, but sometimes the sure bet is worth the added time and hardware. And you will then have a spare drive to use a tool like carbon copy cloner to make bootable backups every so often so when the inevitable strikes, you can keep working...