I've been using Photoshop CS3 on my iMac pretty much since it's release and have a Canon Canonscan 4400F scanner which has always worked perfectly. However since I upgraded to Snow Leopard the scanner has been incredibly intermittent and now has finally packed up altogether but ONLY in Photoshop.
In CS3 if I try to import from my scanner I get this errror message:
"Cannot communicate with scanner cable may be disconnected or scanner may be turned off. Check status. Scanner driver will be closed 155.0.0"
When I upgraded to Snow Leopard I found that the scanner didn't work at all but went to the Canon website and downloaded the latest drivers and software and that got it up and running. However I then noticed that I had to re-install the driver each time I rebooted my Mac if I wanted to use the scanner via Photoshop i.e. the Canon Toolbox software always works but the TWAIN driver seems to pack up each time in Photoshop.
As I now have a lot of documents that I need to scan urgently yesterday I spent a number of hours trying to fix this problem as I really need to be able to scan from inside Photoshop. I once again downloaded the latest drivers and software from Canon and also downloaded the latest Canon Printer/Scanner drivers from Apple but yet again this made no difference. I then downloaded a trial version of Photoshop CS4 (and the separate TWAIN driver) and installed that. However since doing this I now cannot get my scanner to work at all in either version of Photoshop and even re-installing the latest driver from Canon won't get it working. I get the same error message saying that it cant communicate with the scanner but yet again the Canon Toolbox software DOES still work and so I can scan by using that, just not from inside Photoshop. Clearly it can't be a 'communication' problem if one program does work but another doesnt so it seems to me as though there is a problem with Photoshop CS3/CS4 under Snow Leopard with Canon scanners.
Anyone else have this problem, anyone been able to solve it?