Torque and the second edition of this book

Hello

i would like to know which version of TGE is used in the second edition of this book..

if its based on TGE 1.4 or older .. because of compatibility issues with TGE 1.5.2.

i know 1.4 its compatible with 1.5 .. but im not sure if the older versions are.. and if the examples are based on old version it may cause problems

thanks in advance

cheers