emClient fails to re-install after the program was deleted by Norton Power Erase

I recently has a problem with security and Norton Power erase deleted the program files for em client and possibly changed the registry.  The data files and backups are still there for the emails. When I try to install em client again it goes through a few stages and then says that
“the installer has encountered an unexpected error installing this package.  This may indicate a problem with this package.  The error code is 2755.”