Hello sorry for the late reply, I was out of the house for a few days 
What do you mean by developer mode? You mean the safe mode? 

Hello,

So it seems I've got this weird problem where maps not downloaded and installed directly from the UGX Map Manager will not be installed correctly.

I've tried to install 2 maps, Oil Rig and EncampmentV2-BO3, both of them have given me ...