It's been years since I worked with an early Presonus Studio One, and now that we're at Fender Studio Pro (8) I have a lot to relearn. I've managed to get a version of Studio Pro 8 (pseudo trial :/) to try before buying, mainly to see if I can get it setup and working with the equipment I have, and to see how things sound (I need a nice piano sound). Obviously, as of now I can't just login and get things downloaded automatically.

Even so, it installed without any apparent glitches, activated with R2R Sphere 3, and it sees my AudioBox USB and midi keyboard. I found a number of .soundsets to try and they do get scanned and loaded, and in every instance, once the instrument or preset shows in the left column, keystrokes are detected (e,g, the small indicator light jumps up and down with each keystroke).

But I'm having a couple of problems:
1) The only soundset I can get any audio from is Presonus Deep Flight One. Trying the Fender CV Piano gives no sound at all, though audio is apparently working (i.e. as in Deep Flight One).

2) Trying other instrument presets, like instruments>track presents>instruments>piano, I get an error popup for a "Missing Package"...Presonus.studioone.keysxt" is missing (not 'keyset'. What is a keysxt?). There's also an error for a "Missing Clip...Grand Piano - Light.soundx".

I have been doing a lot of searching for answers to these errors, so if anyone has an idea of what I'm missing, I'd appreciate the help.
Thanks!