I'm using OS X 10.5.8 and I can't upload any files to specific website (I've tried all the browsers: Safari, Chrome, Firefox). All files are greyed out in the Finder window that opens.
I know the site is OK, because when I tried to upload from other user on my Mac or from other computers it's working just fine. I deleted the
.plist files, restarted the apps, but with no luck.
Does anyone have an idea how to solve this?