Here’s more info to help anybody else find this problem in the future.
These were messages in Event Log:
Event Type: Error
Event Source: .NET Runtime
Event Category: None
Event ID: 0
Date: 6/15/2006
Time: 3:08:49 PM
User: N/A
Computer: USGDPWV81NB
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: Unable to open shim database version registry key – v2.0.50727.00000.
Event Type: Warning
Event Source: BizTalk Server 2004
Event Category: BizTalk Server 2004
Event ID: 5410
Date: 6/15/2006
Time: 3:08:51 PM
User: N/A
Computer: USGDPWV81NB
Description:
An error has occurred that requires the BizTalk service to terminate. The most common causes are an unexpected out of memory error and an inability to connect or a loss of connectivity to one of the BizTalk databases. The service will shutdown and auto-restart in 1 minute. If the problematic database remains unavailable, this cycle will repeat.
Error message: Object synchronization method was called from an unsynchronized block of code.
Error source: Microsoft.XLANGs.Engine
BizTalk host name: BizTalkServerApplication
Windows service name: BTSSvc{6F61A33D-4419-43A2-853E-4EBEB35A7EE0}
For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.