All right, in addition to the specific keys you're pressing, I'm going to need to know exactly which screen you're on when you press them. My guess is that some DFHack keybinding is crashing, but I don't know if it's one implemented by a plugin hooking in (e.g. the red ones that appear on-screen) or a "keybinding" command that gets run on startup (e.g. in dfhack.init).
I think if you can upload your "stderr.log" file from the DF folder (next to Dwarf Fortress.exe on Windows, not stderr.txt), that should be enough for me to determine what keybindings from the "keybinding" command are active.
Edit: if you can upload your stderr.log from right after DF crashing (don't start DF again before uploading it), that would be even better, since DFHack might log the command that it attempted to run.
Just a sidenote, LNP/the new version of DF isn't what's causing the crashes, it's definitely DFhack (or at least automatic keybindings somehow). I've been able to play the game for hours straight without crashing once I disabled DFhack, but with it enabled I get frequent enough crashes that I just restart the game with it enabled whenever I want to do something with it (usually designating a bunch of veins with digv and cleaning units and items).
I looked at stderr.log multiple times after crashing, and it always says the same thing. I don't see any other files that give any info on the crashes. Here's what stderr.log says right after the game crashes, but it says the same thing all the time:
"FirstCall()
Initized HOOKS!"
I don't have dfhack settings on anything but the default (and in LNP launching everything is disabled), so it's something in the default settings that is causing the crashes. It's definitely from keypresses, every single time there's a crash it happens on the press of a button. I can't exactly remember what buttons, but it seems to happen whenever I go to a dwarf and press "P" to look at his preferences and adjust his labors (since I don't know how to enable/disable just hauling with dwarf therapist). So somewhere along the way of pressing "p" on a dwarf, then "L" to look at it's labors, it crashes (but not every time). I think it's crashed other times. I don't know much about dfhack, where can I find the default keybinds so I can disable them? I also want to know how to disable the mouse from interacting with the game completely when dfhack is on.