What do you exactly mean by another DMX controller?
I have used before another daslight box (DVC2 Gold) and that works fine in both situations. But not after the last time, maybe the output of the multidim is broken....
In all situations i use a terminator.
I don't have another multidim, i can use another dimmerpack (Elation DP-DMX20L) what i could use, i will try that, but that will be in a few weeks
Next performance is next month, i'l keep you updated,