Hi,

Can SAC run with the cross-maze variation for ant? With the default parameters, the command:

"python ./examples/mujoco_all_sac.py --env=ant --domain=ant --task=cross-maze --policy=gmm --log_dir=data/ant_cross-experiment"

does not throw any errors but "Launches 0 experiments." I was able to track the problem down to rllab's _ivariants_sorted function in class VariantGenerator in misc/instrument.py which returns a generator for an empty list when the cross-maze task is specified (it seems to work for Multidirection) as a opposed to a list with a dictionary containing run parameters.

Am I doing something wrong or not including a run flag?

Other than that, thanks for sharing the code!