Similar experience here.
13.12 works fine for 79XX / 280X but not with my r9 290s. Gives an error and closes unless I use 14.x with them
did you tried using 13,12 modded drivers?
yes 13.12 = 13.12 modded
i uses 13.12 modded as the standard driver on all my 6 GPU rigs but with this particular miner for my R9 290s, it only works with 14.x drivers so for now i run it with 5 GPU. 13.12 modded works fine with my 6 GPU 79XX / 280X rigs though