Hi Grox! Love the mod, I've been using it for a while, and it's been great. Bad news though, I believe I found an oddly-specific crash. To recreate it, open the game, enter a world, kill a Myconid, and exit the game. Then, go to your mods list and use the Reload Mods button. Now go back into a world, and the next time you attack a Myconid, the game should crash. I don't know for sure how many of these steps are necessary, or if there's other ways to reproduce this crash, but this way seems to be decently consistent, and it does seem that using the Reload Mods button is a part of it. Maybe it's a problem with your Unload() function somewhere?
I've been able to reproduce the crash with only GRealm and Base Mod installed, with no other modifications to the game. I'm using tModLoader v0.10.1.2, Base Mod v1.0.7.5, and GRealm 1.0.7.7. Below is a screenshot of one of the crash reports:
I posted this problem to the GRealm Discord as well, but if you need to talk to me about it, contact me on the Terraria Forums. I don't use Discord much
Edit: I should also note that the Runtime Error log doesn't add anything that isn't already shown in the screenshot above.