ERROR: Could not open activation key file (null)

[deq2]

Hey, I'm trying to use your cassie_standing_env, but I'm getting this error:
ERROR: Could not open activation key file (null)

I have a mujoco key, and it looks like this means that the directory we're looking for the key in is (null), as in, it isn't searching an actual directory. Any idea what's going on here? I can run cassie-mujoco-sim but not the version in this repo (which seems to be more recent, with walking trajectories).

Thanks!
Deirdre

[yeshg]

Hi Deirdre,

There are probably one or two things that might be going on here. First of all, check which version of mujoco and cassie-mujoco-sim you are using. Apex uses the mujoco200 branch of cassie-mujoco-sim with mujoco200. The second thing that you'll probably have to configure to use the mujoco200 version of cassie-mujoco-sim is setting the following environment variable.

export MUJOCO_KEY_PATH=/path/to/.mujoco/mjkey.txt

Because apex already includes the compiled libcassiemujoco.so from the mujoco200 branch, adding the above line to your bashrc should fix the issue you're seeing, assuming that you're using mujoco200 and ubuntu 18+

Sorry for the late reply. I hope this helps!

[whitbrunn]

Hi Deirdre,

There are probably one or two things that might be going on here. First of all, check which version of mujoco and cassie-mujoco-sim you are using. Apex uses the mujoco200 branch of cassie-mujoco-sim with mujoco200. The second thing that you'll probably have to configure to use the mujoco200 version of cassie-mujoco-sim is setting the following environment variable.

export MUJOCO_KEY_PATH=/path/to/.mujoco/mjkey.txt

Because apex already includes the compiled libcassiemujoco.so from the mujoco200 branch, adding the above line to your bashrc should fix the issue you're seeing, assuming that you're using mujoco200 and ubuntu 18+

Sorry for the late reply. I hope this helps!

export MUJOCO_KEY_PATH=/path/to/.mujoco/mjkey.txt did work for me!