I upgraded from the the CE v5 to v6 but can't even access the GUI. I've managed to track it down to this error in the zend_server_ui.log
2013-02-14T14:44:41+00:00 ERR (3): Failed retrieving license directives from ZS blueprint
This is running on my local laptop installation running Win XP as I wanted to give it a whirl before putting it on our development server. I noticed that after installing 6, 5 was still in add/remove programs so I uninstalled 6 but it wouldn't let me remove 5 so I reinstalled 5 and then uninstalled that again to try and tidy it up but I have since reinstalled 6 but still get the same error.
Any ideas?

