None.
I think this was mentioned some time ago in earlier threads/posts, you CAN'T, I repeat, CAN'T change the terrain with an Extended Unit Death Trigger. 

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O)FaRTy1billion[MM] -- runtimes for WinMPQ can be found at https://sfsrealm.hopto.org/downloads/WinMPQ.html
NudeRaider -- probably some missing .dll I would guess msvcp140.dll or some similar number
NudeRaider -- It's a palette problem. Make sure to only use colors present in the existing image.