Ah! Always something I forget to check. That fixed it.

Just to note, the one on the Vault is still V12 so it'll still be broken. Was it intended that this was updated too or was the license an issue still?

Regardless, the support is much appreciated.

Sadly seems that even with the linked fix, this is still broken (or maybe broken again by another update) as it gives an Access violation immediately upon loading.
game_20861403.log

Mavors are literally supposed to be game enders. If your enemy had the resource to build one you're supposed to lose or destroy it very quickly, they already take a long time to build and are expensive meaning they probably have map control anyway.