The reason Powerhouse will not load is due to a bitmap restriction in the engine. Currently, the only way to get non power of 2 bitmaps for counters compiled is to rig them as "interface". Due to the interface bitmaps on the DMR and Storm BR, the map will not load through he menu. Iirc, you have rename it as a slot map. And no, I haveot completed work on the map yet. My copy of Halo has exceeded activations so it is nearly impossible to test changes quickly. I am still working on it though.