Dynamics CRM 3.0 Problem with Calendar

I have MS Dynamics CRM3.0. Since last week I get the following error when I try (or any of my users) to access the calendar, or access an appointment (my CRM is fully updated with latest ROLLups, I think ROLLUP 3):

General Failure in Scheduling Engine

At the same time, I get the following error in the Application Event Viewer:
Event Type:      Warning
Event Source:      ASP.NET 2.0.50727.0
Event Category:      Web Event
Event ID:      1309
Date:            18/10/2008
Time:            11:46:05 pµ
User:            N/A
Computer:      CRMSERVER
Description:

Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 18/10/2008 11:46:05 pµ
Event time (UTC): 18/10/2008 8:46:05 pµ
Event ID: c251c46137ec497c977a325c5fa7c2ae
Event sequence: 44
Event occurrence: 1
Event detail code: 0  
Application information:    
Application domain: /LM/W3SVC/3/ROOT-1-128687929524062500    
Trust level: Full    
Application Virtual Path: /    
Application Path: d:\Program Files\Microsoft CRM\CRMWeb\    
Machine name: CRMSERVER  
Process information:    
Process ID: 7928    
Process name: w3wp.exe    
Account name: NT AUTHORITY\SYSTEM  
Exception information:    
Exception type: SoapException    
Exception message: Server was unable to process request.  
Request information:    
Request URL: http://crmserver:5555/calendar/day.aspx?date=2008-10-18T11:46:00     
Request path: /calendar/day.aspx    
User host address: 192.168.10.101    
User: ITDEV\Administrator    
Is authenticated: True    
Authentication Type: Negotiate    
Thread account name: NT AUTHORITY\SYSTEM  
Thread information:     Thread ID: 12    
Thread account name: NT AUTHORITY\SYSTEM    
Is impersonating: False    
Stack trace:    at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
   at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
   at Microsoft.Crm.Platform.Proxy.CalendarWebService.Expand(Guid id, CrmDateTime from, CrmDateTime to)
   at Microsoft.Crm.Application.SMWrappers.Calendar.Expand(TimeInterval interval)
   at Microsoft.Crm.Web.Calendar.CalendarPageHelper.ExpandCalendar(DateTime startDate, DateTime endDate, String calendarId)
   at Microsoft.Crm.Web.Calendar.day.ConfigureForm()
   at Microsoft.Crm.Application.Controls.AppPage.OnPreRender(EventArgs e)
   at System.Web.UI.Control.PreRenderRecursiveInternal()
   at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
  Custom event details:

I applied all the ROLLUPs last week, after the problem appeared in my system. But none of the roll-ups fixed the problem.
Any help?
poutsesAsked:
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Biffster007Commented:
Hi,

Can you check the properties of your CRM website and find out what version of ASP.Net it's running.  This error message looks like it's an ASP.Net 2.0 error message and CRM 3.0 should be running using the 1.143 DotNet framework.  If it is running 2.0 change it to 1.143, perform an IISRESET then try to access CRM again.

Let me know how you get on.

Cheers,
MH
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poutsesAuthor Commented:
The tab for .NET framework is not shown in my IIS properties for the CRM site. I even tried the aspnet_regiis.exe -i -enable to insert the tab, but it has not been added. So I cannot answer your question.

I believe it is a data problem and not a .net framework problem. I have done everything as shown on the MS literature, but still nothing happens...
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Biffster007Commented:
Hi,

If the tab isn't showing it means that there is only one version of the DotNet framework installed and judging by the error message it looks as though it may be version 2.0.  CRM 3.0 is built to run on 1.143.

In IIS Manager can you check the Web Service Extensions and see what versions are installed?

Cheers,
MH
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poutsesAuthor Commented:
.NET 1.1 is installed in my system. The versions are:
.NET 1.1: 1.1.4322
.NET 2.0: 2.0.50727
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poutsesAuthor Commented:
You were correct. The problem is that I was running CRM 3.0 with .NET 2.0. I switched to 1.1 and everything is fine now. I used the tool mentioned in the following article to change between .net versions, since the .net tab was not available in my ISM.

http://bytes.com/forum/thread559064.html

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