I have replaced the rear rotors and pads on my '98 Z3. Before putting the tires on, I tested the job on the jack stands. Now the ABS light comes on and I doubt I could drive the car. Have checked the pads and rotors and they are clean and I have adjusted the hand brake. Also bled all four brakes. The ABS light still comes on.

Any ideas would really be appreciated.

By the way this is at 194,000 miles and I actually believed the tire shop that they needed to be changed. Still had 1/3 of the pad left.