Topic: SV plu-in used in Rapidweaver

I use Rapidweaver 3.6 and placed the SV-RWplug-in (0.U2) in the Application Support folder of RW. But the only thing I see in the RW-preview is the SV-Downloadbox. No thumbs at all!
After clicking I get a message that there is no communication via Internet with Airtight...??? and I must reset 'Settings'. But after clicking on 'Settings' nothing happens. What do I do wrong?

I also used Postcardviewer, did the same things and everything works as it should.

Does anyone has a solution/tip?