Some adjustments do need to be made. I have used newton with the newer version though (A6.5.*). Make sure you have all of the files (classes, etc) that newton needs, and then you have to change the UNIT_SCALE to a certain number to get the collision to work in the right place. I had spent about an hour perfecting this damn number, and when I get home from work tonight I will try to send that number to you.