Not Vanilla-Compatable

[meep2k]

I have tried running this mod with 4 other mods which I know to be compatable with the base game (allowing me to host a lobby for my friends) but every time one of them tries to join my lobby, it gives them an error and auto-disconnects them from my lobby. Even giving them an identical modlist (with this mod included) sometimes results in failure.
Even more confusing is the fact that the mod is tagged as "client-side" in the online modlist on r2modman.

Would it be possible to remove whatever it is that forces other people to run this mod to play multiplayer?

Below is my modlist, in case it may be creating this issue due to a conflict:
BepInExPack
HookGenPatcher
R2API
MMHOOK_Standalone
BetterUI
ItemStatsMod
TooManyFriends
ProperSave

[WhelanB]

Hi,

Could you please include any error logs/snapshots of what both you see in the console and what your friends see?