The Yamaha AN1x Synthesizer mailing list

(I know for sure that version 3.55 - my
version - does not support asio 2.0 drivers). Hence I can't use any
of the cool new vst plug-ins (yet).

You might check to see if that is the problem. If vst 3.7 supports
asio 2.0, it might be just a question of downloading new asio drivers
for your soundcard.
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You can get the 3.7r2 update at the steinberg site for free.

It works with 3.5 programms.

asio 2.0 came with 3.7 r1 update

www.steinberg.de

com will work also......I guess.

Rolf