Thank you so much for your post. I had the same problem you described only I was upgrading from V8 to V11 and I was using a CD. The install would put out a dialog box saying "installing avcontrolSDK Please wait" then a dialog would come up later saying fatal error. Following your input I did the following:
1)removed the VS 11 folder that was created in the first install attempt
2)copied my upgrade CD to disk
3)edit info.ini and change AVControlSDK=1 to 0
4)ran setup from the copy on disk
5)ran utilities\AVControlSDK\AVControl.exe from the copy on disk
Thanks again, my install looks successful.
http://phpbb.ulead.com.tw/EN/viewtopic.php?t=22885