Using v0.8.9 VS 2019 binaries.
(sys:load "libs/core/audiobuffer.xtm")
(bind-func dsp:DSP
(let ((ab (AudioBuffer "assets/samples/christmas_carol.aif")))
(lambda (in time chan dat)
(AudioBuffer_read ab chan))))
It just exist with no error message printed or anything.
Also tried with my own build, which uses a more recent VS2019 release, but same result.