Error in Search after restore from backup

Question

We recently had to restore our Sharepoint 2010 Enterprise farm from backup due to a failed attempt to move the SharePoint DB's to a new SQL server and now our search service is no longer working.  It had been working fine before the restore mind you. 
I took the recommended action of removing the search service (and related DB's) and adding a new one via Central Admin but that simply results in another broken service that won't work.  I thought that perhaps running the Powershell script listed here
might help narrow down the problem:
http://blogs.msdn.com/b/russmax/archive/2009/10/20/sharepoint-2010-configuring-search-service-application-using-powershell.aspx
I assumed this would allow me to see where the process is failing.  So after updating the variables to meet our environment, here's the step that fails:
$SSI = get-spenterprisesearchserviceinstance -local
Start-SPEnterpriseSearchServiceInstance -Identity $SSI
The error is as follows:
Start-SPEnterpriseSearchServiceInstance : Unable to cast COM object of type "Microsoft.Office.Server.Search.Administration.MSSITLB.CGatheringManagerClass' to interface type 'Microsoft.Office.Server.Search.Administration.MSSITLB.IGatherManagerAdmin3'. This
operation failed because the QueryInterface call on the COM component for the interface with IID '{0FF1CE14-013A-0000-0000-000000000000}' failed due to the following error: Error loading type library/DLL. (Exception from HRESULT: 0x80029C4A (TYPE_E_CANTLOADLIBRARY)).
I can't seem to find resolution to this error via Google.  Anyone have any thoughts?

Answer 1

Hi mbrowning01,
The issue may be caused by the permissions problem.  When you open the PowerShell command, please make sure you “run as administrator”.
SharePoint 2010 Management Shell must be launched with elevated administrative permission by selecting Run as administrator.
http://technet.microsoft.com/en-us/library/ee806878.aspx
share your result.
Wayne Fan
TechNet Community Support