The error message I receive is VSS: Can't read volume data (Source: Hard Disk Manager). BR 2013 - it worked before. Toshiba 64 bit laptop / Win 7 - Home Premium. I had a backup and some diffs. I decided to start from scratch and deleted them. I backup to an external drive on my home network. It ran for 2 hours. It appeared the 1st step ran good but then crashed and the following 3 steps said "cannot run due to previous errors" and I received the message, "VSS: Can't read volume data (Source: Hard Disk Manager)." I tried again, same thing. I ran chkdsk.exe /f. Same result. I called Paragon and was advised to run chkdsk.exe /r. After that it crashes in step 1 after a 1/2 hour and I receive the same message. I did repair in control panel and same result. I uninstalled and reinstalled. Instead of opening in advanced mode as before, it opened in basic mode. I tried to back up in basic mode and got the same result after a 1/2 hour.