R u running a virtual keyboard other than the stock htc? If so the calibration is designed to run with the stock keyboard. I run better keyboard and i tried calibrating once and it forced closed on me. When i cleared the defaults and restored the original htc and tried calibrating it worked fine. But my point is if ur already running an aftermarket keyboard and try to calibrate it will always force close cuz it doesnt recognize the aftermarket keyboard. Restore htc first then calibrate, then switch back to aftermaket.