It works fine here. I just loaded the six versions of BluesRumbaFastPercEv, one at a time, into a utility track and regenerated and it plays fine. No error message.
(I don't have any file named xoooox_style.txt in the drums folder or bb folder either, but it works fine).


BIAB 2025, Studio One 7 Pro, Song Master Pro, Win11 Home. i7-9700K CPU, 32GB, ESI MAYA44eX, Guitar Pro 8, Transcribe, (EZKeys2, EZD3, SD3, EZBass, EZMix3)
Amateur: fiddle, guitar, vocal, beginner on bass.