I have multiple instances of AOS (AX 2012 R2 cu6) on one machine and the Database Server for them is on another Machine.  I want to install SSRS now.  So I have followed all the steps as given in the blow link:

http://dynamics-ax.blogspot.in/2011/11/ax-2012-install-multiple-instances-of.html

I run the SQL setup again and created one more instance and updated the config files as mentioned in the above link and also placed the exported configuration file on the box where DB and SSRS is installed(not sure is this correct or not). But I am getting the below error while I am trying to access Web Service URL from the Reporting Services Configuration Manager:

Server Error in '/ReportServer_DENMARKREPORTS' Application.

Configuration Error

Description: An error occurred during the processing of a configuration file required to service this request. Please review the specific error details below and modify your configuration file appropriately.

Parser Error Message: Could not load file or assembly 'Microsoft.Dynamics.Framework.ReportsExtensions, Version=6.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. (C:\Program Files\Microsoft SQL Server\MSRS10_50.MSSQLSERVERDENMARK\Reporting Services\ReportServer\web.config line 29)

Source Error:

Line 27:     <httpModules>
Line 28:       <clear />
Line 29: <add name="AxReportsHttpModule" type="Microsoft.Dynamics.Framework.Reports.AxReportsHttpModule,Microsoft.Dynamics.Framework.ReportsExtensions, Version=6.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35" /> Line 30:       <add name="OutputCache" type="System.Web.Caching.OutputCacheModule" />
Line 31:       <add name="WindowsAuthentication" type="System.Web.Security.WindowsAuthenticationModule" />

Source File: C:\Program Files\Microsoft SQL Server\MSRS10_50.MSSQLSERVERDENMARK\Reporting Services\ReportServer\web.config   Line: 29