Bug / Crash Importing Obi Rope in Unity 2020.1.0b1 fails

[josemendez]

If you want to get 5.1 running in 2020.1, open up ObiConstraints.cs and add [NonSerialized] in front of the protected ObiConstraints<T> source; declaration, like this:

[NonSerialized] protected ObiConstraints<T> source;

that should fix the issue.