I sent a dump.
On a custom EMU server I'm seeing M2Melee crash a character.
Can't seem to figure out what it is about the plugin.
I uploaded a dump
*Disregard* I found the issue was a faulty discipline, "Throw Stone"
I've been dealing with this for a while as well.
The above issue you had, I also experienced.
Updating to latest Win10 was my cure. But looks like the gents got that covered.