Each time I try to import my RAW files from my D7000 to LR5 on iMac, I get an error message. I tried to convert to DNG, but the same error popped up that the files were "unreadable".
It would help if you gave us the exact error message, word-for-word, verbatim
Here is a screen shot of the error:
The folder that Lightroom is trying to write the photos to does not have write permission. Change your permissions.
Retrieving data ...