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.