Sudden Strange Inventory Problem

[TheWayToGod]

About a half hour ago, it asked me if I'd "like to update Spoutcraft" or something. I hit "Yes" and it updated it and everything, but on any of my worlds (I first noticed it in a world with loads of energy collectors) everything that's not vanilla disappears. It's not actually gone, as I can walk into it and stuff, but I can't right or left click these things and opening my inventory crashes the game. If I screwed something up, tell me please.

[Jay?]

Try redownloading the launcher. Also, are you using a texture pack?

[TheWayToGod]

I've already tried redownloading, the exact same thing happens. And no, I'm not using a texture pack. I purposely didn't because I wanted normal or that cool Sphax texture pack thing with all the technic pack stuff in it.

[Truculent]

Possibly you changed from Technic to Vanilla in the launcher, double check it?