vzctl 4.3 doesn't run mount action script when starting container

vzctl 4.3 doesn't run a $VEID.mount action script when the container is started. Even the "echo .." line in the script doesn't run.
vzctl 4.2 did run the script.

It's the same mount script, with no changes to system configuration. (Well none made by me: I'm the sole admin.) The only thing I did was 'yum update' which brought in the new version of vzctl.

This is happening with kernel 2.6.32-042stab076.8. I went back to 2.6.32-042stab076.7 and vzctl 4.3: mount script not run. When I went back to vzctl 4.2 (and its library) the mount script is run once more.

The HN is running centos 6.4. Mount script attached. Any other info I should provide? Forum: http://forum.openvz.org/index.php?t=tree&goto=49638