Does Acronis affect Volume Shadow Copy service?

For 6 weeks on my new Win 8.1 computer, I've been losing system restore points on a regular basis and get shadow copy aborted messages and something turns off Volume Shadow Copy service. Does Acronis TI 2014 on non-stop backup affect this?

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Still using Acronis Image 2014 and still getting Volsnap errors and having System Restore points wiped out on an irregular basis. Comparing the time the volsnap errors occur with Nonstop Backup starting, ALL the volsnap errors occur a few seconds round the time NSB starts (but not all NSB starts result in a volsnap - in fact, most don't). This is quite a coincidence if Acronis is really not doing it. Any ideas? See the examples below
Log Name: System Source: volsnap Date: 21/11/2014 14:04:41 Event ID: 27 Task Category: None Level: Error Keywords: Classic User: N/A Computer: mesh Description: The shadow copies of volume C: were aborted during detection because a critical control file could not be opened. 14.04.49 NSB started
Log Name: System Source: volsnap Date: 19/11/2014 07:12:37 Event ID: 29 Task Category: None Level: Error Keywords: Classic User: N/A Computer: mesh Description: The shadow copies of volume C: were aborted during detection. 7:12:48 NSB started
Log Name: System Source: volsnap Date: 18/11/2014 07:59:38 Event ID: 29 Task Category: None Level: Error Keywords: Classic User: N/A Computer: mesh Description: The shadow copies of volume C: were aborted during detection. 07:59:48 NSB started
Log Name: System Source: volsnap Date: 14/11/2014 06:43:15 Event ID: 29 Task Category: None Level: Error Keywords: Classic User: N/A Computer: mesh Description: The shadow copies of volume C: were aborted during detection. 06:43:25 NSB started
Log Name: System Source: volsnap Date: 11/11/2014 08:08:27 Event ID: 29 Task Category: None Level: Error Keywords: Classic User: N/A Computer: mesh Description: The shadow copies of volume C: were aborted during detection. 08:08:37 NSB started
Log Name: System Source: volsnap Date: 23/10/2014 07:49:20 Event ID: 27 Task Category: None Level: Error Keywords: Classic User: N/A Computer: mesh Description: The shadow copies of volume C: were aborted during detection because a critical control file could not be opened. 07:49:30 NSB started
Log Name: System Source: volsnap Date: 18/10/2014 20:51:31 Event ID: 29 Task Category: None Level: Error Keywords: Classic User: N/A Computer: mesh Description: The shadow copies of volume C: were aborted during detection. 20:51:31 NSB started
In the Event Log for NSB, most days are OK with a green tick, but lots also have Error crosses on the same day as a green tick and an occasional one only has the Error cross. What does this mean and what causes it? - no messages saying what the error is.
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OK - I've solved why they occur together - they all seem to be during starts or restarts of the computer!
But can you tell me why I have so many red Error crosses in the log?
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