Ok, I meant that the function I updated was the Serial.print(10, BYTE) to Serial.write(byte(10)) because apparently the .print was outdated.
I didn't understand before you pointed it out that the code on that website defines the functions writeTo and readFrom. It's starting to make a bit more sense now.
Thank you for the summary Nick, that compiles for me 
Sorry, I'm a bit of a noob with programming in this language, the last few days have been quite a steep learning curve.
Out of interest, is this a fairly efficient way to request information from the device?