Server Error in '/PortfolioServer' Application - Please help

[Barry]

Is there a simple way to resolve this issue?

Server Error in '/PortfolioServer' Application.
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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.Office.Project.PortfolioServer.Optimizer, Version=1.0.2508.22969,
Culture=neutral, PublicKeyToken=71e9bce111e9429c' or one of its dependencies.
Failed to grant minimum permission requests. (Exception from HRESULT:
0x80131417)
(C:\Inetpub\wwwroot\wss\VirtualDirectories\80\PortfolioServer\web.config line
66)

Source Error:


Line 64: <httpRuntime executionTimeout="1800" maxRequestLength="524288"/>
Line 65: <httpModules>
Line 66: <add
type="Microsoft.Office.Project.PortfolioServer.PSWA.ModularArchitecture.Redirector" name="ModularRedirector"/>
Line 67: </httpModules>
Line 68: <xhtmlConformance mode="Legacy"/>


Source File:
C:\Inetpub\wwwroot\wss\VirtualDirectories\80\PortfolioServer\web.config
Line: 66