ASP .NET problem

Hello all,
I am using Visual Studio .NET under Windows XP. I have a solution with 5 projects in it. All projects are working except one. When I try to view it in the browser it tells me:

"Server Application Unavailable
The web application you are attempting to access on this web server is currently unavailable. Please hit the "Refresh" button in your web browser to retry your request.

Administrator Note: An error message detailing the cause of this specific request failure can be found in the application event log of the web server. Please review this log entry to discover what caused this error to occur.
"

I was working on it last days and there was no problem. But the yesterday I can not try it in the browser because of that error.

What does the application eventlog tell you?

"Event Type: Error
Event Source: .NET Runtime
Event Category: None
Event ID: 0
Date: 1/16/2007
Time: 02:00:46
User: N/A
Computer: PEAKSOFT
Description:
The description for Event ID ( 0 ) in Source ( .NET Runtime ) cannot be found. The local computer may not have the necessary registry information or message DLL files to display messages from a remote computer. You may be able to use the /AUXSOURCE= flag to retrieve this description; see Help and Support for details. The following information is part of the event: .NET Runtime version 1.1.4322.2032- aspnet_wp.exe - Common Language Runtime Debugging Services: Application has generated an exception that could not be handled.

Process id=0x9a0 (2464), Thread id=0xa14 (2580).

Click OK to terminate the application.
Click CANCEL to debug the application..
"

and

"Event Type: Error
Event Source: ASP.NET 1.1.4322.0
Event Category: None
Event ID: 1000
Date: 1/16/2007
Time: 02:00:54
User: N/A
Computer: PEAKSOFT
Description:
aspnet_wp.exe (PID: 2464) stopped unexpectedly.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.
"

Can anybody help me? It is urgent! If anybody has an idea please tell me ...

I fixed the problem. It was the code that crashes the app :)