Recently I switched to ESET Internet Security and a recent upgrade to v13 (i guess) caused some plugins to fault, a memory addres read exception. As I got in mind no issues before that update, I added the OpenMPT folder to HIPS exclusion list and problems ceased. I'll add some pictures later and catch the exception with VS.
Seems like the biggest virus on your system is ESET! ;)
That's terrible to hear, can you confirm if it happens with other hosts as well?