I would restart all the services for AC. I had a problem with CM6 and AC. everything went in, but I battled forever with it working correctly. The document says you do not have to restart the services, but actually you do after install.
If you subscriber/publisher database replication problems, your AC will affected first.
AC is completely different than 4.x. You really need to follow the Admin Guide for CM6 or 5. Between the CTI control groups, the AC account in the service parameters, etc.. there is a lot of stuff pay close attention to.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.