It's been a while now since I've been a couple of months since this problem started and I've ignored it.
When I try to import from my camera's card or the HD after importing with Elements I can see the previews but the actual import says it can't read the files.
I have both CR2 and JPG files on the card.
I have tried removing the Lightroom preference file like I saw in another post but it has not helped.
I have a mac with Yosemite 10.10.5.
Any help would be appreciated.
Without seeing the exact text of the error message....
Normally a "read" problem is actually a write problem in the destination directory. Using Finder, make sure you have READ and WRITE access to the destination folder(s).
Also make sure you have the destination Panel opened (not collapsed) in the import dialog.