These two entries show up in the event log after trying to load a .NET page that fails:
A condition has occurred that indicates this COM+ application is in an unstable state or is not functioning correctly. Assertion Failure: SUCCEEDED(hr)
Server Application ID: {02D4B3F1-FD88-11D1-960D-00805FC79235}
Server Application Instance ID:
{380353F8-FF1C-4538-BB9F-18A971F31317}
Server Application Name: System Application
The serious nature of this error has caused the process to terminate.
Error Code = 0x8000ffff : Catastrophic failure
COM+ Services Internals Information:
File: d:\qxp_slp\com\com1x\src\comsvcs\tracker\trksvr\trksvrimpl.cpp, Line: 3000
Comsvcs.dll file version: ENU 2001.12.4414.308 shp
-- and --
The run-time environment has detected an inconsistency in its internal state. This indicates a potential instability in the process that could be caused by the custom components running in the COM+ application, the components they make use of, or other factors. Error in d:\qxp_slp\com\com1x\src\comsvcs\package\cpackage.cpp(1184), hr = 80080005: InitEventCollector failed
In the System Log I found these (all separate entries):
The COM+ System Application service terminated unexpectedly. It has done this 1 time(s). The following corrective action will be taken in 1000 milliseconds: Restart the service.
The IIS Admin service terminated unexpectedly. It has done this 9 time(s).
The Simple Mail Transfer Protocol (SMTP) service terminated unexpectedly. It has done this 7 time(s).
The World Wide Web Publishing service terminated unexpectedly. It has done this 9 time(s).
The COM+ System Application service entered the running state.
The COM+ System Application service terminated unexpectedly. It has done this 2 time(s). The following corrective action will be taken in 5000 milliseconds: Restart the service.
The COM+ System Application service entered the running state.
The COM+ System Application service terminated unexpectedly. It has done this 3 time(s).