Your info isn't even vague, it's simply completely devoid of any technical facts. System specs, save settings, storage locations and a lot more.
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That looks very much like a failing drive, bad RAM etc. That's usually the cause. Backup immediately if you haven't done so already.
I don't know what you mean by "no other images" or where you are viewing those, but keep in mind that embedded jpeg previews can be OK and the file itself corrupted - something you won't see until you actually open the file.
EDIT: I suppose it could also be the video driver, so try to update that.
Okay. I work on an iMac with 12GB of Ram, a i3 processor, and a 1TB hard drive. I use Adobe Photoshop CS5. The images that I upload from my camera as .dng files and the images that I upload from my scanner as .tiff files are unaffected by whatever it is. I work on my files in Photoshop and save them as .tiff files. I store them on my local hard drive. Only the files that I work on in Photoshop are affected by whatever it is. The original files have never been affected. What other information do you need to get an idea of what is happening?
I do have back ups of my files. The Time Machine backs up the affected files as they become affected.
I am not that tech savvy. I am very frustrated. This has been going on for quite a few months now. I have tried to contact Adobe, but they will not talk to me. I have looked on discussion forums and have found nothing that looks or sounds like the problem that I am having. My computer is used to edit photos. That is it's main purpose. I updated my OS before all this started to happen, but Apple and everything that I can find on the internet says that CS5 is compatible with the new OS. I uninstalled my software and reinstalled it again and got about 1 month of no corrupt photos, but then it started again. Right now I wish I had a darkroom and the knowledge to go along with it.
The first thing I would do is take a couple of affected files to another computer, to check whether they really are corrupted. Do not trust previews, they tell you nothing about file integrity. You have to open them.
If the files are OK, it has to be a video driver issue. What the Mac procedure is there I don't know.
You're still not indicating the exact version of Photoshop CS5. Is it Photoshop 12.1?
What is the exact version of your OS? Is it fully updated?
Have you Verified your Disk and Repaired Permissions with Apple Disk Utility?
You're not working obver a network and saving to a server, are you?
Please read this FAQ for advice on how to ask your questions correctly for quicker and better answers:
I am currently running OS 10.9.2. My photoshop is 12.0, I will update that and see what happens. I verified my disk, but did not repair permissions. I will do that as well. I am not working over a network. I'm sorry, but I don't know if this is video card information or not (ATI Radeon HD 5670). Thank you for the information. I will try updates and see if that helps my situation.
My photoshop updated to version 12.0.4. Is that a problem. When I go to updates, it says "no updates available."
Originally the previews looked good, but when I opened the files on my computer they were corrupt. But to be sure, as you suggested, I took them to another computer. They are definitely corrupt.
My photoshop updated to version 12.0.4. Is that a problem…
No, not at all. Only those of us who started out with Photoshop 5.1 get to update to 12.1. You must have started with Photoshop 5.0.
Now you have to figure out what is corrupting your files. The first suspect is a failing hard drive; then bad RAM (yes RAM can go bad), etc.
We just wait for the next regular OS update and hope that Apple has updated the offending video driver. There's no other way to get updated video drivers, in contrast with printer drivers.
How do I find out if I have a bad hard drive or bad RAM?
You test RAM by taking out two RAM sticks at a time (after powering the machine off, of course) and then re-booting.
There are a few RAM testing applicatons around, but they don't always catch all bad RAM.
As for the HD, the wisest thing would be to back it up immediately, then run Disk Warrior and Apple Disk Uttility's.
However, with the low price of hard drives these days, I'd put in a brand new drive immediately after backing up the old one.
Check the Apple boards for basic troubleshooting and routine maintenance procedures.