First: That a project was not able to open never happens to anyone as I know, except it was really created with an older or newer version.
Second: I have no problem to open the file with 4.1.5. I don’t know why you have this problem, it’s not reproduce-able for me.
Anyhow, I extracted the driver for you, so you should be able to use it.
Your driver is really big. I think you’re noticed that loading the driver in the device editor takes some time. Do you really need all these commands? Or is it just a workout to get some V-Control skills?