Can't use FHT library

there have a been a lot of people unable to properly install the FHT library lately, and i dont know what is causing it. so any input from more experienced people would be very helpful.

the reason for the wiered output data is because the code is optimized for use with PD, so the output is a serial.write, rather than a serial.println (the latter does ascii readable text, the other is just raw data).