Following upgrade to Exchange 2010 Service Pack 1 I found that I was unable to lauch either the Management Console or Shell; receiving the following error messages:
During the installation of Service Pack 1 it appears a number of files have been removed from the %ExchangeInstallPath%\bin directory on the Exchange Server, these files being:
CommonConnectFunctions.ps1
ConnectFunctions.ps1
RemoteExchange.ps1
To restore these files browse to the Exchange 2010 Installation media and copy the above files from ‘setup\serverroles\common’ folder to %ExchangeInstallPath%\bin
Once you have copied the files; the EMC and EMS may be launched successfully.
Deans Blog 