SOLVED:
i created my own mashup of various armor pieces using outfit studio and nifskope so it isn't my first time doing this. this armor however is causing me problems. The CK doesn't show the armor in the armor addon window etc. and if i try to equip it in game it crashes.
it has no weight slider support and it uses various parts from other stuff so i cant publicly release it on nexus.
unfortunately i am completely lost now so i'm hoping for someone to help. here are the boot, cuirass, and gauntlet meshes. i didn't include the textures as there wasn't a problem with them and didn't want to make a big archive.
if you manage to help fix it i will mark it a solved with credit etc so others can get help thanks.
Update: Thanks to Hanaisse the meshes have been fixed. for people that are having similar problems with new armor mashups etc. crashing the CK/game import the meshes in Outfit Studio, zero out the values in the coordinates tab, check for improper partitions, then finally check the bone weights.