are you sure it's only the bunker ??
I once had this prob where the Prism Tank destroying a Weather Control Device triggered an IE (Internal Error)... In fact, it didn't came from the WC Device but from the Prism Tank's elite weap : by destroying the WCD, it got instantly promoted to Elite, and so got a new weap (ElitePrimary= ) which didn't exist.....
So check that first : if you have an EliteWeap, make sure it exists.
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