SimError

i am new to jass and all that just started today, where would i find SimError for the invx? Or where do i find the trigger?

You can find many scripts at the Jass Vault

SimError should also be there.

It is in the InvX map...

It is probably in the implementation trigger category.

Edit: Although, I think perhaps latest InvX is not using SimError? I thought I replaced it with CS_Error, so if there is some documentation saying that InvX needs SimError and you can't find SimError in the map, the documentation is probably wrong.