Thanks Larry. I did send a very detailed email to support with my exact install steps and directory and file locations. They never read it. They just responded back with a boilerplate: update the software, update the sounds.

I think my problem stems from trying to maintain all my previous installs (Sampletank 2, 2XL, SampleTank 3, OmniSynth, and two eSoundz add-ons). Several of these were converted from SampleTank 2 formatting to SampleTank 3 formatting. And then putting the sounds from each program on a separate drive from the application drive. Kind of a mess I know.

I did find that if I take the SampleTank 4 Instruments and the Samples and put them into separate folders under the previously installed Instruments and Samples folders, I can get it all the programs to work.

Still kind of a hodgepodge and I'm debating where to just delete the earlier SampleTank versions along with the eSoundz programs and go with just a clean install of SampleTank 4 with ST3 and ST4 sounds.

Don't know if this will work as I only have the ST4 update USB stick so maybe it won't install correctly if I delete ST3.

Thank for your help and guidance,

Jeff

Win11, Intel i7 7700K 4.2Ghz, 32Gb RAM, 2x1Tb HD, 500Gb NVMe, BIAB/RB 2025, MOTU 828MK3 audio, MOTU Midi Express, Yamaha Montage 7, DX7II, TX802, Motif XS Rack, Roland Fantom XR Rack, Oberheim Matrix 1000, VoiceLive3 Extreme, Kontakt 6, SampleTank 4.3