Basic Autonomous Structures

[cammy:)]

So this is only my second week of being in FRC to be exact, so I'm pretty new here... forgive me if my questions are... weird, or whatever.

Recently I've been trying to teach myself LabView, with some slow progress.... however, some assistance from more experienced people could help a lot.

Right now I'm trying to program a simple practice autonomous program, allowing the robot to simply drive in a square when the button is clicked. It said that it was runnable, however when I tried to run it, it said there were errors with the 2-motor drive open WPI and some other things as well... I attached a picture of the current program and one of my SubVIs (hopefully it appears.......)

Anyway, it'd be really helpful if someone... told me if anything's wrong with my program, or if there are any basic structures that I'm missing....? Yeah... just let me know what to change to make it work.

Thank you!