I am trying to export photos from LR3 to my Hard Drive and a message appears that says, "The file appears to be unsupported or damaged." Can anyone help? Is LR3 too old?
I know you said you are "trying to export" but did you really mean "trying to import"? That sounds like an error message at importing.
If you were able to import the photos into Lightroom 3, and then you can't export them, then I would imagine the photos are damaged somehow and thus you would probably want to restore these photos from backup copies. Also, if that's the case, I would think that the hard drive that contains these photos (the originals, not the backups) might be going bad.