Problem:

While installing or Uninstalling Microsoft Exchange 2007 from the command line using Setup.com and various applicable switches you receive the following error message:
"An unexpected error has occurred and a Watson dump is being generated: Unexpect
ed error [0x116DCE11] while executing command '$error.Clear(); uninstall-Exsetda
taAtom -AtomName SMTP -DomainController $RoleDomainController'.
Unexpected error [0x116DCE11] while executing command '$error.Clear(); unin
stall-ExsetdataAtom -AtomName SMTP -DomainController $RoleDomainController'.

Exchange Server Encountered and Error

Solution:

Background

I was installing the hub transport, client access, mailbox and management tools using the setup.com

setup.com /mode:install /r:h,c,m,t /t:"d:\program files\Microsoft Exchange Server"

So when Uninstalling i received the error message. I was using the following command

setup.com /mode:uninstall

Changing the above command slightly by including the roles that I wanted to uninstall I was able to complete the command successfully

setup.com /mode:uninstall /r:h,c,m,t