Comment # 1 on bug 1043486 from Larry Finger

I was unable to duplicate your results.

I downloaded Leap 42.3 Build 0157 and installed a Gnome desktop on a fresh
partition. I then updated it.

Next I installed VirtualBox and once its GUI was running, I installed the
Extensions. That completed without incident.

What processor does your box have? That info is available from 'winfo --cpu'.
Mine shows as "Intel Core i7-5500". I have heard that some CPU models have
trouble.