This looks pretty odd, and really, I don't think I've ever seen behaviour like this on my setup (linux + wine staging 2.7). Judging by the picture you posted, the executable is trying to read memory @ address 0x00000000, but it is (of course!) not mapped to FeralHeart.exe so it crashes. Why it's looking there to begin with, I'm not too sure. At that .text address (0x4802ea), I see `(%edx),%eax` and edx is zero so maaaaybeee that's where it comes from. Is the error a read at 0x00000000 each time? How much RAM does your machine have? Perhaps you are running out/low. Does this specific error only happen after markings are installed? I'm not too familiar with the playon* wrappers, but if you could run it with console output, that would probably be useful in addition.
Update: I was able to reproduce this behaviour when I tried to create an array in a .cg script with an arbitrarily large size (I think 1581858185 bytes is large ;3). This seems to suggest that you maybe don't have enough video RAM to load all the materials/GPU scripts. Since I believe your GPU to be onboard, you probably only need to increase the VRAM setting in the BIOS (if Macs will allow you, anyways) during boot if I am correct!
