Rated 5 out of 5 stars

Modified the install.rdf to work on versions up to 8.*
Incremented the version to
I had to modify one of the Javascript files in the .jar file. Sorry, but there's no way around it as a Javascript error
was making it fail.
Line 452-454 in the function parameters they used class as a variable name.
class is a reserved keyword and cannot be used. I changed it to Myclass which allows it to work.
Original File
function create_class(class) {
return new Function('return new ' + class)();
Modified File
function create_class(Myclass) {
return new Function('return new ' + Myclass)();

Link to fixed file:

Remove your existing version then go to File->File Open to load this modified version.

This user has other reviews of this add-on.