Most forum members cannot answer questions posted in the RobotC technical Support forum. As you have a competition to tomorrow I wanted to comment so am answering here.
You did not post the #pragma statements from your code, however, it seems unusual that you are using the same indices to the SensorValue arrays as the motor arrays, for example, the use of driveRightFront for both. Unless the motor ports are exactly aligned with the digital input ports I suspect this is your issue. Post the #pragma statement and I can give more input.
Other things to check.
You do mean quad encoders and not IMEs, right ?
Encoder white wire is toward the center of the cortex (towards the VEXnet key).
Is the battery good? (I know, but I have to ask).
Avoid the use of port 10 if port 4 is being used (long story). I suggest digital ports 1 through 8 for the 4 encoders.
If you configure to just use one does that work? Can you move it to different ports? You really only need one on each side for turning, what type of drive do you have?