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I got into contact with SickleYield and they practically told me that they weren't going to help me because the content was free. :-\
Soooo, yeah, I could really use someone else's help now.
I don't know this morph but if it should just change the length of a characters legs you can do that in the shaping pane ("Shaping" - "legs" - "Leg's Length"). Make sure you got editormode selected before instead of "Presets". Works with any character fine.