What does it say when it crashes? or does it just lock up?
Also, make sure the files are not within a deep folder system on you computer. I realised before that the file destination of the files causing PS to crash were in a deep place, and my computer sometimes freezed and took me backto the desktop with the command of drwatsn.exe.
I had this problem A LOT when i was doing my coureswork for graphics with A4 pages (24MB). (PS CS3 also)
It locks up, puts up the generic crash error message (I attached it to this question, but it appears it's still in queue). Then after I say, don't send to microsoft... Photoshop shuts down.
By moving the file to the desktop it helped for a little while.
I have had the file on a different hard drive where I would open it up without any issue for a long time.
Then I started moving the file that I want to update to the Desktop to open it and then that worked for a while.
Then I tried moving the file to the root directory of the OS drive and that seamed to work for awhile.
Now it won't open from the root directory or the Desktop, but it does open it from the 2nd hard drive.
haha, It's making my head spin I tell ya.
Everytime I can open the file(s) and then save them, I back that file up, and it appears to work the next time I open the backed up file, but the original file saved where I edited it from crashes.
One thing to add, everytime I have a successful intervention with Photoshop .. haha, and I've saved all files and closed all files, even if just working on one file... and say I wait 5 minutes or longer or less to shut down Photoshop CS3 it still Crashes upon exit.
Check you HD and cache space to see if you have adequate room for the larger images. Run a program like cclean to delete temp files and clean things up.
When you speak of Cache space, what space are you speaking about?
In Photoshop CS3 Preferences, Performance I have it set up this way:
Available RAM: 1709 MB
Ideal Range: 940-1231 MB
Let Photoshop Use: (I have it set at 1008) MB (59%)
C:\ 39GB free (only box checked)
D:\ 12GB free (unchecked)
E:\ 12GB free (unchecked)
History & Cache:
History State: 20 (usually I have that at 100)
Cache Levels: 6
No GPU options available on XP w/STD Photoshop
Thanks for the replies btw
This looks OK, but be carefull if you use the 100 history states and cache level 6. This could take up a lot of resources if you do many operations. If you are not aware when you modify the entire image of a 20 mb file (like a gaussian blurr), your image size will now be 40 mb. You can see it will add up fast. If I remember right you have 2 gig of ram so a large file coud overtax the computer at some point.