Hello! In the newest version of mujoco (150), there is a problem when running the visualizer of mujoco. When starting it, it tries to initialize, but breaks with the following error: ERROR: GLEW initalization error: Missing GL version According several sources, this seems to be solvable by preloading libraries you forgot to dynamically link. Here is an example on how to preload the libs when using mujoco-py (but this should be very generally applicable): LD_PRELOAD=/usr/lib/x86_64-linux-gnu/libGLEW.so:/usr/lib/nvidia-384/libGL.so python path/to/example This being applied with the appropriate nvidia-XXX version solves the problem, for some the second path seems not to be required. In the deepmind control suite, they seem to have directly implemented a workaround to preload these libraries. See here: https://github.com/deepmind/dm_control/commit/3b736812407d821ec5d48bdea08ac53e00d78d2e Maybe this helps you to work the problem out at the root of it. Thanks!