Body morphs are automatically installed in Daz when you install DAZ itself!
To make sure you have them installed, open DIM (daz install manager) and in the installed products section, search for body Morphs!
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But if you don't, use this link I created:
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The problem with you having several errors is due to the fact that the Duf file you are trying to open contains other products (Morphs and characters) that the author of the Duf file used to create the character, and that you need to have installed as well for it to work!