To solve the problem, we first need to understand the architecture of Spectrasonics instruments. Unlike many basic plugins that rely solely on standard file formats, Spectrasonics instruments like Omnisphere and Trilian utilize a complex system of sound databases (STEAM files) and proprietary patch formats ( .prt_omni , .mult , etc.).
: You updated your "STEAM" library data, but the actual instrument software (Omnisphere, Keyscape, or Trilian) is still running an older version. this spectrasonics data was created by a newer version