There is a 1309 event in the app log as well. It's a ASP.NET 2.0 error.
Event Type: Warning
Event Source: ASP.NET 2.0.50727.0
Event Category: Web Event
Event ID: 1309
Date: 12/3/2008
Time: 1:17:33 PM
User: N/A
Computer: SHAREPOINT
Description:
Event code: 3005
Event message: An unhandled exception has occurred.
Event time: 12/3/2008 1:17:33 PM
Event time (UTC): 12/3/2008 6:17:33 PM
Event ID: a57bc6a28fb54d6999c52e9f2bda0035
Event sequence: 1
Event occurrence: 1
Event detail code: 0
Application information:
Application domain: /LM/w3svc/1/Root/lansweeper32-1-128728018530501824
Trust level:
Application Virtual Path: /lansweeper32
Application Path: C:\Program Files\lansweeper32\website\
Machine name: SHAREPOINT
Process information:
Process ID: 2512
Process name: w3wp.exe
Account name: NT AUTHORITY\NETWORK SERVICE
Exception information:
Exception type: HttpException
Exception message: Unable to read the security policy file for trust level 'WSS_Minimal'.
Request information:
Request URL: http://10.10.20.60/lansweeper32/default.aspx
Request path: /lansweeper32/default.aspx
User host address: 10.10.100.8
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.HttpRuntime.SetTrustLevel(TrustSection trustSection, SecurityPolicySection securityPolicySection)
at System.Web.HttpRuntime.HostingInit(HostingEnvironmentFlags hostingFlags)
Custom event details:
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.