Closed by commit rB90e1b83696b7.
Setting as *unconfirmed*. this is fairly unlikely to be a bug in Blender's code. I expect its some configuration issue.
Checked and it loads fine on Linux (in/out of Blender).
(build "33e9509828f30594852ffd2a0f1dfefcc2e97960", CMake, options -DVRPN_GPL_SERVER=OFF -DVRPN_USE_GPM_MOUSE=OFF)
This has been resolved in addons master for some time rBA381c6e3125500c6bcdf005aca2873501696f62bd
Sorry to be so late to the game.