PPS Error Msg : Unable to connect to Remote server

I got the follwing err Message after i did the PPS Instalation.
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PPS - Error Code - 3008 Message : A configuration error has occurred( Unable to connect to Remote server)
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Detail Error Msg
Event code: 3008 Event message: A configuration error has occurred. Event time: 10/8/2009 12:09:23 PM Event time (UTC): 10/8/2009 7:09:23 PM Event ID: 6a954f77e2cf4aa1a756c50f9cfeb8ef Event sequence: 1 Event occurrence: 1 Event detail code: 0 Application information: Application domain: /LM/W3SVC/774163112/Root/WebService-9-128995025636718750 Trust level: Full Application Virtual Path: /WebService Application Path: C:\Program Files\Microsoft Office PerformancePoint Server\3.0\Monitoring\PPSMonitoring_1\WebService\ Machine name: 25070_2_165763 Process information: Process ID: 4200 Process name: w3wp.exe Account name: NT AUTHORITY\NETWORK SERVICE Exception information: Exception type: HttpException Exception message: Could not load file or assembly 'System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35' or one of its dependencies. The system cannot find the file specified. (C:\Program Files\Microsoft Office PerformancePoint Server\3.0\Monitoring\PPSMonitoring_1\WebService\web.config line 25) Request information: Request URL: http://74.3.234.9:40000/WebService/PmService.asmx Request path: /WebService/PmService.asmx User host address: 74.3.234.9 User: Is authenticated: False Authentication Type: Thread account name: NT AUTHORITY\NETWORK SERVICE Thread information: Thread ID: 1 Thread account name: NT AUTHORITY\NETWORK SERVICE Is impersonating: False Stack trace: at System.Web.Compilation.BuildManager.ReportTopLevelCompilationException() at System.Web.Compilation.BuildManager.EnsureTopLevelFilesCompiled() at System.Web.Hosting.HostingEnvironment.Initialize(ApplicationManager appManager, IApplicationHost appHost, IConfigMapPathFactory configMapPathFactory, HostingEnvironmentParameters hostingParameters) Custom event details:
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
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I refered the following link it solve my issue.

Block Question:
http://74.125.153.132/search?q=cache:onAi3XCJ0ocJ:social.technet.microsoft.com/forums/en-US/ppsmonitoringandanalytics/thread/c83614c0-547f-4243-b6c5-1c04629c9b14/+PPS+%2B+Event+code+3008+%2B+Event+message:+A+configuration+error+has+occurred.&cd=2&hl=en&ct=clnk&gl=in

Answer:
http://blogs.msdn.com/fooshen/archive/2008/10/18/performance-point-server-2007-and-ajax-on-sharepoint.aspx