Files Not Attaching

Since yesterday, I am getting this when attaching scanned files

“The following file could not be opened. This may occur for a number of reasons including, but not limited to: the file is corrupt or the relative link was deleted.”

I can attach files scanned two days ago. I can open the pdf I am trying to attach. I have rebooted, rescanned, and checked for other things. I even recovered the database. I am down to reinstalling Endnote and reinstalling Adobe Reader.

Any suggestions?

Can you find the file by searching the folders?  Is it there? Can you open it from outside endnote, or is it corrupt? Is it supposed to be a relative link or are your settings set to leave it in its original location?