Nifskoping Irrational Meshes?

[Outcast]

Just a little curious. I wanted to try Nifskoping some Irrational Meshes, but everytime I open the original character nifs in Nifskope all i see are the Nodes (Or Bones). It's as if the mesh is always hidden. But when i check the hidden flags, they appear unchecked. Is there a way to unhide them?  

The only time this doesn't happen is when i open the alchemiss_effects, or sea_urchin_effects meshes...  

Edit: Ok. Found out what i was doing wrong...