Recommend the following steps:
1) Redo the brake job, using the same pads. Inspect them to make sure they are not glazed. Clean up the tabs (ears) and caliper guides so that there is no corrosion. Use high temperature grease (designed for brakes) on the tabs on both pads. As noted above, this is the most common cause for squealing. When you reinstall the pads, make sure the clips are tight and properly seated.
2) Bed in the pads. This seats the pads, making sure the friction surface matches up to the rotor surface. Best procedure is on zeckhausen's site, at
http://www.zeckhausen.com/bedding_in_brakes.htm
3) While you have the brakes apart, check the rotor thickness. If it is near the minimum, replace them. It is not necessarily related to the squealing, but you didn't mention if you had done this previously.
4) If you used a pad designed for racing (I don't know the one you mentioned) consider using a low-dust pad like the Axxis Deluxe.
5) Skip the goop on the back of the pads, it is usually temporary.
6) If the warning light came on showing pads were worn out, you need to replace the sensor. Get it from the dealer, it is relatively cheap.
Good luck.