Problem with Consolidation - help!

Hi,

I'm running Acronis Backup 2016 on 3 PCs backing up to a Synology DS213 NAS with a 3TB drive with 2TB of free space.  2 of the PCs being backed up are identical Microsoft Surfacebook pros, one of which backs up properly the other doesn't (which is why I'm posting this).  The configuration settings in Acronis appear to be identical between the two machines.  I've tried deleting all the backups from Cachet (the affected PC), cloning the settings, rebooting the PC before backup, but nothing seems to work.  I can't find any articles on the forum that seem to help.  Any ideas?

Error received:  

The last backup failed
Failed to exclusively access a backup file during consolidation. Make sure the file is not opened in other applications.  Edit connection settings  Check for solution

Check for solutions gives:

Acronis Support Center
There is no information about this error available now. You can use the links below to search for any additional information that might be available.

Here's the log file:

Subject: Backup task execution failed - Acronis True Image notification from Cachet

1    True Image    1/22/2019 1:08:11 PM    Backup reserve copy attributes: format tib; need_reserve_backup_copy false;

2    True Image    1/22/2019 1:08:11 PM    Operation (1)Entire PC (CACHET) started manually.

3    True Image    1/22/2019 1:08:12 PM    Backup reserve copy attributes: format tib; need_reserve_backup_copy false;

4    True Image    1/22/2019 1:08:12 PM    Operation: Backup

5    True Image    1/22/2019 1:08:12 PM    Priority changed to Low.

6    True Image    1/22/2019 1:08:12 PM    Create Backup Archive From:     To file:               "" Compression:        Normal Exclude:               Files matching mask Match criterion:               hiberfil.sys, pagefile.sys, $Recycle.Bin, swapfile.sys, System Volume Information, *.tib, *.tib.metadata, *.~, *.tmp, C:\Users\cache\AppData\Local\Temp, C:\Users\cache\AppData\Local\Microsoft\Windows\INetCache, C:\Users\cache\AppData\Local\Google\Chrome\User Data\Default\Cache, C:\Users\cache\AppData\Local\Opera Software, C:\Users\cache\AppData\Local\Mozilla\Firefox\Profiles, C:\WINDOWS\CSC 

7    True Image    1/22/2019 1:08:12 PM    Pending operation 172 started: 'Creating partition image'.

8    True Image    1/22/2019 1:08:12 PM    Writing full version to file: (1)Entire PC (CACHET)_full_b14_s1_v1.tib

9    True Image    1/22/2019 1:08:13 PM    Pending operation 172 started: 'Creating partition image'.

10    True Image    1/22/2019 2:06:04 PM    Pending operation 172 started: 'Creating partition image'.

11    True Image    1/22/2019 2:06:20 PM    Pending operation 172 started: 'Creating partition image'.

12    True Image    1/22/2019 2:06:20 PM    The following backups have been successfully created: ""

13    True Image    1/22/2019 2:06:21 PM    Consolidate Backup Archive Location:               "" Destination:               "" 

14    True Image    1/22/2019 2:06:21 PM    Consolidate Backup Archive Location:               "" Destination:               "" 

15    True Image    1/22/2019 2:06:23 PM    Failed to exclusively access a backup file during consolidation. Make sure the file is not opened in other applications.

16    True Image    1/22/2019 2:06:23 PM    Failed to open data stream. Try to remove the backup from the list, add it again by clicking 'Browse for backup' and recreate the backup settings.

17    True Image    1/22/2019 2:06:23 PM   

18    True Image    1/22/2019 2:06:23 PM    The operation is not supported.

19    True Image    1/22/2019 2:06:23 PM    Failed to open data stream. Try to remove the backup from the list, add it again by clicking 'Browse for backup' and recreate the backup settings.

20    True Image    1/22/2019 2:06:23 PM    Failed to exclusively access a backup file during consolidation. Make sure the file is not opened in other applications.

21    True Image    1/22/2019 2:06:23 PM    Failed to exclusively access a backup file during consolidation. Make sure the file is not opened in other applications.

22    True Image    1/22/2019 2:06:23 PM    Failed to open data stream. Try to remove the backup from the list, add it again by clicking 'Browse for backup' and recreate the backup settings.

23    True Image    1/22/2019 2:06:23 PM   

24    True Image    1/22/2019 2:06:23 PM    The operation is not supported.

25    True Image    1/22/2019 2:06:23 PM    Failed to exclusively access a backup file during consolidation. Make sure the file is not opened in other applications.

26    True Image    1/22/2019 2:06:23 PM    Failed to exclusively access a backup file during consolidation. Make sure the file is not opened in other applications.

27    True Image    1/22/2019 2:06:23 PM    Failed to exclusively access a backup file during consolidation. Make sure the file is not opened in other applications.

28    True Image    1/22/2019 2:06:23 PM    Failed to exclusively access a backup file during consolidation. Make sure the file is not opened in other applications.

29    True Image    1/22/2019 2:06:23 PM    Failed to open data stream. Try to remove the backup from the list, add it again by clicking 'Browse for backup' and recreate the backup settings.

30    True Image    1/22/2019 2:06:23 PM   

31    True Image    1/22/2019 2:06:23 PM    The operation is not supported.

32    True Image    1/22/2019 2:06:23 PM    Operation has completed with errors.