We've decided to update our build of Voltz to 1.1.3. It includes new items, but also a few glitches. One such glitch is the client crashing when you disconnect. If you ask me, this is just them being nice, assuming that when you disconnect you are done playing, and it closes it for you. Isn't that nice of them?
Anyways, when you launch the Technic Platform, go to the options for Voltz, select "Manually select build", and select 1.1.3 (should be near the bottom). We hope you enjoy!