It's going to take me a minute to jog my memory on this. Can you send me the .EXP file (SMT scene) through private message? The function not implemented in Mod Tool error can be a few things, Autodesk tried to "cap" the exporter so that it couldn't be used for game engines but there are work-arounds, you need to double check your dotXSI export settings. I also need to see your Assimilate settings, they can be found in Edit>Preferences. The biped has gone through a number of revisions since the video was made. I haven't really used it in years, everything lately has called for something totally custom (AT-ST, Gorc). Oh, Pro Tip, you should increase your monitor resolution if possible, Softimage doesn't like a height less than 1024 pixels so on todays 16:9 monitors the minimum recommended resolution is 1920x1080. There is an option for a lower resolution but you have to collapse a lot of the menus to get access to everything on the side panels.