Weldon will fix any cracks or broken acrylic. The stuff is amazing! It actually melts the two pieces together and dries hard enough to drill. If your ever in the area and want to drop by, I have some. It would only take a minute to fix.
If you want to buy some, I could only find it online. Its only $12-$15 for a small tube, but its a hazardous substance, so they soak you another $10-$15 for shipping.