Hello, I've read some similar posts but could not find a fix for my issue. I installed Platinum and all related programs including AD2 using the command center. I followed the instructions and downloaded the XLN installer. the installer shows AD1 but not AD2. I tried the "register product" tab and entered my ser# but it said this product is already registered to my acct.
Anyone have this issue?
Thanks!

Had the exact same issue.  Apparently you just install one of the "paks" an its now (wala) AD2
 
This is what they said to me, have not tried it as I just got back from business
 

Addictive Drums Tech Support
Thanks for getting in touch. To select your content that came with your Bundle purchase please take the following steps:

Run the Online Installer and select to register a product.
This should take you to a page where you can then choose which ADpaks, MIDIpaks and Kitpiece Paks.
Once done don't forget to install these through the main page of the Online Installer. Do this by clicking on the large yellow button to "Install All". This will install the AD2 drum engine plus all your content from your ADpaks, MIDIpaks and Kitpiece Paks.

Please note since we launched AD2 in order to reduce the clutter caused by the larger number of products visible in the Online Installer we have decided to not show the MIDIpaks there. They are still visible in your account if you log in via the XLN Audio web site and they are automatically unlocked once you run the Online Installer after purchase.

Don't hesitate to get back to me if you need any further assistance.

Please ignore my signature. it's been a few years since I've posted here.
I am running win7 64 bit

Thanks cityrat, I'll try this. I also sent a support request to XLN but have not heard back yet.

I just installed.  If you can see the 3 ADpaks, then you can install. 
You have to pick ALL 3 (why?) ADpaks then you get to install them and it installs AD2
 

Awesome. Worked! Thanks for your help.