Error on Registering new account

After an Initial install on Win SBS2K8, I tried to Register a new account. After putting in the correct info I push the Register button and get an error message “Error to creat the engine”.
I assume from this that the engine has failed to start. Are there any conflicts with AV software that are know to cause the issue? Does anyone have an answer to get around the problem?

Hi:

    Please follow those steps to check if Unite service is started.

    Steps:
 Windows Start up -> Control panel -> (System and Security) -> Administrative Tools -> Services 
 You could find one service with name " COMODO Unite MultiLogin Service,provide help to service login", please make sure this service is in 'started'.
 You may start it by manual with right click on it and select 'Start'.

 After that, please exit Unite and launch it again to try.