Hi Erick,
I just tested the same scenarios that you have mentioned in the initial post and they worked fine for me.
Here is what I have done:
1. Installed SMSQL 5.0 on my 2-Node W2K8 setup.
2. Specified a stand alone remote server as the verification server.
3. Ran backups (log backups also) & restores, which went fine.
4. Created a scheduled job which takes only log backup of 3 dbs's (Vdisk scenario), which went fine.
5. Upgraded SMSQL to 5.1 on both the nodes.
6. Did not change any settings.
7. Checked the schedule job for log backups created in step4 as well as manually executed transaction log backup for the same 3 db's using new-backup powershell cmdlet.
8. Both operations were successful.
9. Also checked the restore of 3 db's together, which was successful. SMSQL did not complain about any mount point directory settings.
10. I even checked restore of individual db out of the 3 db's, which also was successful.
Can you please update your database layout, so that I can try to replicate the same and see if the issue mentioned by you can be reproduced.?
Let me know for further details.
Thanks,
Deva