If you are having problems saving .wav files , using VSTi then I might have an answer.
I found that saving my creation to .wav it would only use Microsoft GS Wavetable Default Instrument , even though I was using VSTi !
There is however a Long winded way to save VST Instruments.
I might well post a few Screen Grabs in the morning. Showing how to get this to work , not just using the Untick Render MIDI option in Export , as I found that this did Not do as I wanted.
Please reply if you which to see my work around.
Regards
S