DE Texture Transparency Issue

[DTK21]

I know this texture pack is old and has been dormant but as the title states, some building windows and even some fences (ie empires) either have you able to see through the building through their huge windows, seeing the ocean water below or in the empire's case the fence gives like an xray vision like effect. It's kinda hard to describe but overall it's mainly just that, that is the problem. Also side issue is certain weapons like golf club and thrown weapons like molotov's texture is messed up