How do I Fix this Error? What Does It Mean?

PLEASE HELP


Please Tell Me What this error Means!!! And how to fix it!!!
I Spent ALOT of time on this project and now it won’t play?

PLEASE HELP ANYONE!!!

[28473-screen+shot+2014-06-30+at+7.05.09+pm.png|28473]

This shows up when an object contains a rigibody but the collider has dimensions down to 0.

Here you go:

Actor::updateMassFromShape Error