Did you completely delete the slot, recreate and then follow the op instructions for flashing the ROM? This is what I have to do or I get the black screen as well.
definitely just tried that.
Safestrap: 3.11
Kernel: 4.0.4
Slot: 1
factory reset, wipe system, cache, dalvik, cache, dalvik, install, cache, dalvik.
nothing.
but if it makes anyone feel better, fuzion isn't installing well either.
I have a theory but I need to re-download the rom's without moving them, just straight to my external SD card.