Meshes and animations disconnected when project opened on different computer

Hey guys. Ive been working hard on a Unity game for a university assignment. Ive been using my computer at home, and today I went in to submit some work and decided to do some unity. I opened up my project, but there was something wrong. Many of my meshes and animations had been disconnected from the objects they were supposed to be on.
I quit and went home, opened up my project and they were till disconnected. Do I have to waste my time putting everything back where it should be or what? D:

I opened the project correctly on both computers.

This is a known problem with inter-version compatibility. Is your University running the latest version of Unity? If it isn’t, then you might have some problems there.

Adding animations back on is easier than it looks, if you use prefabs, since you only need to do one. If, like me, you have over 200 animations on your main character, you can select all of them in the project view and drag them onto your prefab, and everything will work properly. I can’t really help with the other stuff, though.

What was the nature of the work you were doing? Do you have a backup?