You reference the clip...and around Time Mark 00:01:30, is where you likely lost contact.
Some of the Scene manager dropped off the view screen. I just finished one as a trial of the structure and it works. I wasn't trying to create a finished product, just testing the tutorial/guide.
If everything doesn't come back to the HIP/Pelvis then the hierarchy will be off. Then you attach it to the World Center Dummy and MERGE.
The video shows you the bare minimum of bones, but it does work if you take it slowly.
5.) Right Hand -> Lower Arm -> Upper Arm -> (Clavicle if Used) -> Upper Torso/Spine
4.) Left Hand -> Lower Arm -> Upper Arm -> (Clavicle if Used) -> Upper Torso/Spine
3.) Head -> Neck -> Upper Torso/Spine -> Pelvis
2.) Left Toe -> Foot -> Lower Leg/Calf -> Upper Leg -> Pelvis/Hip
1.) Right Toe -> Foot -> Lower Leg/Calf -> Upper Leg -> Pelvis/Hip
Final 1, 2, 3 -> World Axis Dummy - MERGE
(" -> ") means attach p.s. I actually used 3 Spine bones as Lower, Middle and Upper from the pelvis to the neck and it still worked. I also used Toe bones...not required, but they do work if you add the piece to represent them. So I actually used 25 pieces, and that is beyond what is needed.
Use the image from the clip Time Mark starting 00:02:39 showing the actual bone structure inside 3DXchange5 (Do a Screen Print and save it as an image) then use it as your 2D background in iClone when building the characters structure and it should help.
Good Luck.
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