I just lowered my car on H&R springs, and got the pesty abs, trac, and headlight sensor flashing on my dash now. I was wondering if anyone else has had that problem and were able to fix it?

I think it's because there is a sensor that detects when the car is at an angle. If it detects a difference between the front and rear it reports an error. I also believe that it can be caused by hitting the sensor while working on the car.