I updated from Mixcraft Pro Studio 6 (32 bit) to Pro Studio 7, and selected 64 bit. Afterwards, Pro Studio 7 could not find Pianissimo. Apparently, Pro Studio 7 64 bit was not looking in the proper directory for Pro Studio 6 32 bit VST plug-ins. Adding that directory (in my case, C:\Program Files (x86)\Acoustica Mixcraft 6\VST) solved the problem.
I don't know if that affected anyone else, I just wanted to report it...
Minor Mixcraft update problem, easily fixable
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