[asherkin]

You can see from the stack trace that the TakeDamage call came from CInferno (a built-in entity) rather than a plugin, so looking for plugins using SDKHooks_TakeDamage is the wrong path. While commonly this would indicate a bug in the game, there was an active OnTakeDamage SDKHook, if a plugin using that made a SDKCall with subtly incorrect gamedata there is a chance the server could survive long enough to crash here. You should temporarily rename your gamedata folder and replace it with a fresh copy from the SourceMod download, that will cause all the 3rd party things you have to fail to load, then you can focus on them.