When I select a Vst plug-in folder, it does not connect any Vsts other than the ones included in the program.
Waves, Steinberg.... None of them works.
It works fine in previous versions of the program and in the trial version on Samplitude Pro X3.
Has anyone encountered similar problems?

Thanks for posting this, I was just about to post the same thing... 

I used VSTi's with Music Maker just a few weeks ago, but when I 'switched over' and purchased Samplitude Music Studio just a bit ago, those same VST's (free ones from a company on the Internet) do not seem to work (from the same folder).

I tried moving the DLL files and other source files around, but cannot seem to get them to work with SMS... 

It's nice to know that others have had this too - so just letting you know I have the same Question, too (and am waiting here for an answer heh)