I've sorted it out for my setup
I unistalled VS11 using Control Panel,
Removed all traces of Ulead / Videostudio folders from the C: Drive,
Followed the advice in the following link:
http://phpbb.ulead.com.tw/EN/viewtopic. ... 5773#55773
Using regedit, removed every reference to Videostudio from the registry (there was at least 1 entry which included 'Videostudio 8',
Ran Registry Mechanic to make sure everything was OK.
When I then installed VS11 Plus from the CD, it installed without any pause at all at the AVControlSDK stage.
So .......... it would appear that there is a bug in VS11 which prevents it upgrading successfully if any trace of an earlier version is encountered during installation.
It worked for me, it might work for you!
