This all does seem like the same problem.

In my experience, those "Instrument not found" errors have always been caused by the Hi-Q sounds not being installed correctly, or SampleTank not being pointed to the correct Instruments folder.

I'm sure we'll figure it out when we hear from you. If you have trouble getting through by phone, please contact us through the online chat service. Feel free to ask for me.

Thanks
Kent
PG Music