Modular Road Tool problem

Hey if someone can help, I am currently using a toolkit called Modular Road Tool (MRT) which is free. After I downloaded MRT, copied it into my project, the main tool with which I should normally be able to use to build spline roads is not working and is showing these errors of some variables missing and structures not valid. I am not sure whether I should just create the missing variables. Does anybody know what I should do? Other people who are using this toolkit doesn’t seem to have this issue.

The following is the Modular Road Tool:…the_community/