Back On Track "Can not access backup" error

[RobL12]

I have been using NXT4 Back On Track (BoT) with no problems on a new computer I have with a 512gb SSD. I back up to a WD 1tbPassport. In case it matters, the BoT sees the Passport both as a removable drive or another hard drive. I removed one of the older backup sets from a RProject folder on the backup drive as I have always done to make more space available on the backup drive. After that, when I attempt to do a Content Backup I get a "Cannot access Backup" error and the backup fails. Why is this happening? The backup I removed is permanently deleted because of long file names. I have always been able to delete an older backup set on my failed older computer with a mechanical hard drive and then continued to run successful content backups. Also, the Restore sees the existing backups, but still sees my deleted backup, not sure why. Any help or insight would be much appreciated.

Than you,
RobL12

[RobL12]

Update:

I repaired installation, did not work, uninstalled and reinstalled BoT through setup, did not work, did another repair and it is fixed. I include this information instead of deleting message so maybe the process will help someone else who  runs into this. It is a new computer and I've been installing programs and something in BoT must have gotten corrupted. Use the options I did for correcting.

[Brendon]

Thanks for that information Rob.  I was busy trying to duplicate your problem and couldn't, so I was going to spend the afternoon on it.

You've saved me a heap of fruitless work.  Bless you!

I now have an afternoon free, so I'm off to get an overdue haircut.