I might just be remembering this wrong, but I thought the free version of Unity’s collaborate features let you add three people to a project, including yourself, not just two, for some reason though, I only have another person added to the project seats, but it won’t let me add any more than that, do you guys know why?
No idea about Collab issues, I’ve seen nothing but errors from that package when it gets accidentally installed and I don’t want anything to do with it.
I strongly suggest using proper industrial-grade source control in order to guard and protect your hard-earned work.
Personally I use git (completely outside of Unity) because it is free and there are tons of tutorials out there to help you set it up as well as free places to host your repo (BitBucket, Github, Gitlab, etc.).
As far as configuring Unity to play nice with git, keep this in mind:
Here’s how I use git in one of my games, Jetpack Kurt:
Using fine-grained source control as you work to refine your engineering:
Share/Sharing source code between projects:
Setting up an appropriate .gitignore file for Unity3D:
Generally setting Unity up (includes above .gitignore concepts):
It is only simple economics that you must expend as much effort into backing it up as you feel the work is worth in the first place.
“Use source control or you will be really sad sooner or later.” - StarManta on the Unity3D forum boards