**Spoilers**

After beating the campaign, I wanted to unlock all the modules. So I loaded the save right before fighting the cloaked ceph since they were 5000 nano catalyst a piece (btw, were those 4 really the only cloaked units in the game? I feel like the most expensive module, cloak tracker, should have some more use...). But after killing one and seeing the collected 5000 nano catalyst message, I checked my modules and it said I had 0 catalyst.

Not only did I not actually pick up the nano catalyst, but any nano catalyst I had before got erased as well.

So I thought I'd try starting a new game on the easiest mode so I could just rambo it. But after collecting the first 100 nano catalyst and checking the module screen, it still said I had 0 nano catalyst. Every module I had in the first play through was already unlocked though.

I'd really like to know why I can't unlock any more modules once I beat the campaign. I didn't unlock air stomp as it seemed useless going through post human difficulty in mostly stealth. But now I really want it cause it seems like it would be fun to use just dikeing around on easy.