If you used the Online Installer then there will be 2 instances of
AD on you Plugins list...they won't be identified. It will just show AD
twice.
One is the 64 bit and one is the 32 bit.
I recommend excluding the 32 bit from your list with the Plugin Manager, just so
you don't use it accidentally. Or rename it in the List to AD 32 bit.
You'll have to trace the plugin path so you know which is which, as it won't indicate
which is which.
Another important thing is to not have both X2 and AD on the same hard drive.
That will cause problems also. The program will have to work extra hard and may
crash due to that. Keep programs on one drive and instruments and sounds on another.
Barring those things I don't know....
I use it on Win 8 64 bit with Quadcapture 1.5.1 and X2a without issue all the time...
they reside on different drives...
I'd also run the XLN Installer to make sure everything is up to date...