System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.AnalysisServices.Xmla, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' or one of its dependencies. The system cannot find the file specified. File name: 'Microsoft.AnalysisServices.Xmla, Version=11.0.0.0, Culture=neutral, PublicKeyToken=89845dcd8080cc91' at
This error occurred to me when i was trying to add .bism  model file in SharePoint Power view configuration  in WFE server .  The reason would be power view configuration process not installed the Microsoft.AnalysisServices.Xmla.dll  in the WFE server, You can check the dll by navigating C:\Windows\assembly  in the particular server.    If this dll is not available you need navigate ( PCUSOURCE\1033_ENU_LP\x64\Setup ) in your SQL installation and execute spPowerPivot  with out PowerPivot  options.