All script references gone on opening project in Unity 5

Great. Over a 1000 warnings & errors on opening a project in Unity 5.2.1 on my Mac that a colleague had updated from 4.6.8 to 5.2.1 on Windows. And all script references gone.

No such problem on my Windows machine.

Code (CSharp):

1. Invalid metdata file discovered, no '.info' file. Will be deleted: 'library/metadata/00/00000000000000001000000000000000' and 'library/metadata/00/00000000000000001000000000000000'.resource (if exists).

Code (CSharp):

1. Path mapping for Asset with GUID ba50d600348994f798c691e75a348ad2 is missing! Cleaning up.

Code (CSharp):

1. Asset 'ProjectSettings/NavMeshAreas.asset' is in assets but has no assettimestamp...

Will have to delete and get again from SVN. It it happens again I'll get a third time will send in a bug report before opening in Unity.

 

Had the same problem where all my objects in the scene were missing scrtipts which was fixed by closing Unity, deleting temp and Library folders from the project and reopening forcing a full rebuild from clean.

Try changing the project serialization type in Editor Settings to text too as that seems to help SVN merge the scenes as we're using that source control too. Think default is mixed.
http://docs.unity3d.com/Manual/class-EditorManager.html

 

Thanks. Good to know for next time. Already using Force Text mode.