Nightlies and .modpak Files Incompatible?

Edit: After my original question was answered three minutes later by myself, I'm repurposing this post.

So, I've installed a few graphics mods in my Nightly build, specifically works such as Detailed Species, Sleeker Glitch Chassis, Novaskin, and Starface...

However, it seems that whenever I have any of the mods in a modpak format (Starface + Novaskin) installed, my game will open for about 1/2 of a second before closing again. These are simple graphic replacers and should be compatible with any version, so are the nightlies incompatible with the .modpak format?

 

Just assume that nothing is likely to work on the nightlies, they are chaotic and often break.

 

If you want to use all four of those, plus a few other mods, you can use the Species Improvement Modpack included in this file:

https://drive.google.com/file/d/0B7-d_0WxqHTFNzhYbUY5eXJZSFU/view?usp=sharing

Works in Nightly, guaranteed. Not final version though.