Slay the Spire

Slay the Spire

Downfall Expansion Mod - 5.3
Crash With Specific Card - Downfall Mod
After a couple of hours using the mod with no issues, I suddenly cant use a specific card.
Crystal Ray(and Crystal Ray+), a card used by The Guardian, causes the game to crash when used in combat.

I have tried reinstalling the game and all mod content and have no other conflicting mods yet it still happens.

Of course this is only a minor issue and I can play without this one card, but it may happen with other cards as I've not delved very far into the Downfall content. Also, I built my main strategy around those cards so it makes the work I've put into the deck pointless and I'll have to restart, which is discouraging.

Anybody else having this problem?