32bit plugin crashes under Sonar X2 64 bit and Windows 8!

Hello,
 
maybe someone have the same problems as I under Windows 8 (64 bit).

I have a 32bit plugin, it's the editor of the Korg M50. Under Windows 7 (64-bit) , everything worked fine with Sonar X2 Pro. But under Windows 8 (64 bit), the plugin doesn't work fine. I think it is a problem with the internal bitbridge of Sonar and Windows 8, because Sonar X2 is not official ready for Windows 8 - but X2a is coming soon.

Does anyone also have problems with 32-bit plugins under Windows 8, which worked fine under Windows 7?

Kind regards,
T. Finkbeiner