Xpand!2 no sound in Cakewalk Sonar

Hi all,
few days ago I installed xpand!2 (2.2.7).
I have a problem when I use it in Cakewalk Sonar 8.5.
Installation seems ok.The interface and presets are loaded correctly into DAW but no sound comes out.
Even the other vsts, if present, stop working if I open xpand.
Do you have any suggestions?
My os is Win10 64bit and all system requirements are ok
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