I checked a bunch of crap. I didn't even have StockRevamp installed at the time, and it was a fresh version of MM. So far I've removed all my mods and started looking around for some more to try and test the issue with. Be warned, for some reason it's not reminding me when people post here. May be late in responding. - - - Updated - - - Alright. I can confirm. ModuleManager is the root cause of this problem. Started up a new Sandbox save, no other mods, verified cache, and bam, half the catalogue or more was missing. Getting the log after shutting the game down. - - - Updated - - - For reference, this ModuleManager was taken straight from CKAN, latest published version. I had no other mods installed at the time. This is only a sampler of what I found in the ModuleManager loading area. http://pastebin.com/4L3f1f2q