We set up Master Loot for EV last night (sucks that there is no /roll or /random). We looted a chest. The ML assigned things to people...and they didn't go. In addition, he tried assigning the pre-assigned drops and there was no option to do so. People tried to loot their pre-assigned or assigned things and it failed. No one could get anything.
The only way we could distribute loot was to make each person raid leader and let them loot the chest.
Call me kooky, but that sort of defeats the purpose of Master Looter, at least to me