Rendering issues including with BiblioCraft armor stands, eh? Think that shouldn't be too difficult to fix, though I do wonder if this occurred when I reimplemented the SmartMoving model or if it's related to the invisibility module bug that was introduced during the initial move to 1.7.10.. Plainy, if you could downgrade to MachineMuse's version of Numina and Powersuits temporarily and see if this bug still exists in the meantime, it would certainly help me determine where this bug lies.
As for the ingredients, odd that I cannot find any mention of anything that requires artificial muscles, etc... in the code. I'll look more thoroughly when I have the chance and see if I can figure out what's going on... Someone posted something else related to this on MachineMuse's issues page, apparently the module does exist but drains more power than it should anyway when installed in creative, so I'll definitely look into that, too and see if its energy conversion is proportionally accurate.