Kontakt 5.5.2 is a legacy version of Native Instruments' sampler that is frequently used by musicians who need to load "unlocked" or unofficial libraries.
The developers of Kontakt eventually issued a formal statement. v552 had indeed exposed a dormant tracing capability; unintended side-effects had arisen through heuristic optimizations that treated similar signals as shared. They rolled the core back, but in doing so they preserved trace logs and opened a forum to discuss user control over memory-like data in instruments. native instruments kontakt v552 update unlockedtracer