Transfering collections/animations to another PC?

[Juice]

Hi, I'm trying to do something very simple, and having no luck.

The animator creates a collection + animation in a folder. He then gives me the whole folder (including spritesheet, atlas, etc).
I add the folder to my unity Assets, rebuild indexes, and now none of his stuff works in my unity. His collections and animations are empty,
and both give an error when trying to access them:
"Invalid sprite collection found. This clip will now be deleted."

So, how do I properly transfer SpriteCollections and SpriteAnimations from one unity project to another?

[unikronsoftware]

Are you transferring it properly by using Unity packages (i.e. export Unitypacakge from one end and import into the other computer)? Otherwise the metadata will be missing and things can (and probably will) go horribly wrong.

[Juice]

Once again, excellent support!

I was just dragging and dropping, so I'm assuming that was my problem, thanks!