For some reason I can't upload images to my media gallery. I had no issues when I did it a few weeks ago and since then the only thing that really changed was that I upgraded my software to the latest version. It really don't give me a detailed error but:
The following error occurred
There was a problem uploading your file.
*insert file name*
I've tried several images and even ones that uploaded correctly, nothing works anymore.
The directories are still there, permissions haven't changed from the ACP side of things and on the server they are 755. Not sure what you mean by correct user but no permissions have been changed recently.
Depending on server setup, 0755 isn't correct. They may need to be 0777. (If there was a change in configuration, the permissions may need to be changed.) This will need to be done recursively (to all the files and directories within).
It could... have your host/admin check... the reason I say that is the file has ps in it's file name.
ps is used at the CLI to report a snapshot of the current processes.... so the mod_security rule may be to strict.