Configuration.exe Error

I ran Configuration.exe the day before and was not able to complete the setup.

The following day I received the following exception. 

Event Type: Error
Event Source: .NET Runtime 2.0 Error Reporting
Event Category: None
Event ID: 5000
Date:  8/25/2006
Time:  11:57:40 AM
User:  N/A
Computer: DSBTTST1HE
Description:
EventType clr20r3, P1 configuration.exe, P2 1.0.0.0, P3 43cc0af7, P4
configuration, P5 1.0.0.0, P6 43cc0af7, P7 302, P8 56e, P9
system.applicationexception, P10 NIL.

Object reference not set to an instance of an object. (Configuration)

——————————
Program Location:

   at Microsoft.BizTalk.Configuration.ConfigMapper.GetArrSize(XmlDocument
xmlDoc)
   at Microsoft.BizTalk.Configuration.ConfigMapper.loadMap()
   at Microsoft.BizTalk.Configuration.ConfigFrameworkAppContext..ctor(Form
configForm, Form startDlgForm, Boolean forceStartDialog)
   at Microsoft.BizTalk.Configuration.Program.Main(String[] args)

I checked the log in my temp folder but could not find the problem. I also tried running from the command line, Configuration /u. No error message, but saw a similar error in the app event log.

 I tried to reinstall BT 2006 Enterprise  but that didn't resolve the problem. 

 Any recommendations?

 Thanks,

Howard