Help me fix AddictiveDrums please!

Hey dudes!

I m struggling for half year now with this tech issue, so there it goes:
I install AD properly, Nuendo/Cubase starts, new project, it works flawless.
after opening any more new project, AD control window gets in but no sound at all!! Any of you experimented this before? Any ideas how to fix it? ( I use Pod xts asio, on Vista) This thing drives me mad, my brain is damaged...
any ideas welcomed!