Did you see the success messages on the tablet when using EasyFlasher? If not, it didn't work. Check you device manager for the APX device and that you used the naked drivers.
If you did see the success messages, then try flashing stock with EasyFlasher. See if that fixes your boot loop.
If so, then use EasyFlasher to flash TWRP again and then flash KatKiss.
ASUS Transformer 16GB with Keyboard Dock - Munching on Jelly Beans
crApple iP*one 5 - Stock
Just once I want someone to call me Sir without adding you're making a scene.
- Homer Jay Simpson