New Melee Hero + Crashing

SO I made this Hero for melee maps (Hey, I bet you know why!) and it's crashing when I click on the Tavern which has it or when I kill a unit with it. I Put the Hero in the Gameplay Constants - Heroes field, I don't know what's wrong.

EDIT: It appears to also be crashing randomly. Any Ideas?

Is it whenever the unit gains experience?
What a way to start off the hero contest

Nah, cause it doesn't gain exp when I target the tavern, or (apparently) at random.

Yeah, I know what ya mean >_<

have you changed any of the hero's stats? Try CnPing a hero, putting it under gameplay constants, and see if it causes a crash.

If you're using JNGP 4d, random crashes may be to do with war3err.

Or Download the rollback.

JNPG? erm... What? I'm confused >_<

JassNext Gen Pack v 4d

Ah. No, I'm not. Regular old WE, actually, though I plan on upgrading fairly soon.

Try copy and pasting it into a new map like TheSecretArts suggested, if that doesn't work, we will need more info on what you've changed to help.

Well if this info helps...

When I was testing on how to select a normal unit via Chaos morph, I'd use a hero and then transform it using Chaos morph so it'd have the stats of the hero but the physical properties of the unit.

Whenever it killed a unit, I assume it was trying to add experience to a hero which didn't have that capability.

Random crashes COULD be when something is trying to access it through the techtree or something (my guess).

Well exp "is" disabled for the unit sometimes because of an ability, so I'll check that.