Topic: Knox / files don't appear

Hi Knox gurus,
I have been using knox for several months and it works fine on my Mac, but I used it to protect my backup drive also. Today when I opened the backup drive in knox, it doesn’t show any files in finder, although if you look in the get info window for the backup drive, it shows that half the drive is used. What the heck??? How can I find those files, or erase them, or something…