Ok, answered my own question: reinstalling HQP 3.13b3 or trashing HQP preferences did not help; HQP would crash whether I stopped play before advancing or not; but going back to HQP 3.12 has solved the issue.
Yeah, we’ve seen some crashes in the beta when interrupting tracks (or just pressing the stop button in HQPlayer) too. In our observations so far, it’s been limited to PCM output modes–DSD output is very stable for me. We’ve reported it to @jussi_laako, and I think he is working on it.
Happens to me as well with the 3.13 beta versions, all the time. However I am up sampling my PCM files to DSD outputs (normally poly-sinc-shrt-mp, ASDM7, DSD256).