Backup metadata enumeration failed

Environment: 

DPM 2012 R2 CU7

Sharepoint 2010

Affected area:Sharepoint Farm\Servername\SharePoint2010_Config
Occurred since:2016-03-28 20:04:37
Description:DPM could not obtain backup metadata information for SharePoint Farm Sharepoint Farm\servername\SharePoint2010_Config on Sharepointserver.name.com. If the data source is a SharePoint farm then a valid recovery point has been created. However, content databases from this recovery point can be recovered using the alternate location option only. (ID 3134)
More information
Recommended action:
If the data source is a SharePoint farm, then 
1) Ensure that "ConfigureSharePoint.exe -EnabledSharePointProtection" has been run on the front-end web server with the current SharePoint farm administrator credentials. 
2)Ensure that the SharePoint VSS writer is running on the front-end web server.
Resolution:DPM automatically changes this alert's status to inactive 10 days after it is issued.To dismiss the alert, click below
Inactivate

I have re-run the configuresharepoint.exe - enablesharepointprotection och checked thee VSS writer, everything seems ok.

The WssCmdletsWrapperCurr errorlog gives me the foolwing information. Any idées of what could be wrong?

19540AF4 03/2821:00:00.89131wsscmdletswrapperfactory.cpp(241)ACTIVITYPrincipal name HOST/Sharepointserver.name.com@global.local
19541E7C 03/2821:00:00.92303sharepointutils.cpp(166)WARNINGFailed: Hr: = [0x80070002] : Error trying to Open Registry Key HKLM\SOFTWARE\Microsoft\Shared Tools\Web Server Extensions\15.0
19541E7C 03/2821:00:00.92303sharepointutils.cpp(247)WARNINGFailed: Hr: = [0x80070002] : Encountered Failure: : lVal : GetInstallLocationRegValue(SP2013_INSTALL_REGISTRY_KEY, ssInstallPath)
19541E7C 03/2821:00:00.92303sharepointutils.cpp(74)NORMALFound SharePoint 2010 installation
19541E7C 03/2821:00:10.03231WSSCmdlets.cs(99)[00000000009E3FE0]NORMAL==>GenerateCatalog
19541E7C 03/2821:00:10.03231WssFarmEnumerator.cs(443)[00000000009E3FE0]NORMALOnlySiteLevelCatalogNeeded = False
19541E7C 03/2821:00:10.03231WssFarmEnumerator.cs(477)[00000000009E3FE0]NORMALMaximum Number of Threads = 1
19541E7C 03/2821:00:10.09531WssFarmEnumerator.cs(268)[00000000009E3FE0]NORMAL==>Initialize
19541E7C 03/2821:00:20.53231WssFarmEnumerator.cs(294)[00000000009E3FE0]NORMAL==>InitializeContentDatabaseList
19541E7C 03/2821:00:20.53231WssFarmEnumerator.cs(294)[00000000009E3FE0]NORMAL<--InitializeContentDatabaseList
19541E7C 03/2821:00:20.53231WssFarmEnumerator.cs(268)[00000000009E3FE0]NORMAL<--Initialize
19541E7C 03/2821:00:20.53231WSSCmdlets.cs(134)[00000000009E3FE0]WARNINGCaught Exception while trying to generate Site/Document Catalog.