instanceID is null with CacheServer validation

Unity Engine
1

Hello
I have come upon some interesting errors from our CacheServer in the last week. Has anyone ever seen an instanceID come back as null?

After syncing source from SVN and opening my project up in Unity, I see a lot of the following errors:
“CacheServer Asset validation failed ‘Assets/MyProjects/Project/…/someasset.file’.
Main representation instanceID is null”

These are clearable errors.

Keep in mind the “someasset.file” has ranged from a material .mat file, png, jpg, or prefab.
Some of these are the first time have been in our project for a while, some haven’t.

We do run our own SVN and cache server internally and maintain these as well. Nothing like this has occurred since our system was set up months ago.

Appreciate any feedback thanks.

2

We’re seeing the same thing since upgrading to 5.1. We’re using the Unity asset server, not SVN.

3

We were seeing this as well. We found that it happens when the cache server returns an asset to a 5.1 editor that was cached by a 5.0 editor, and possibly vice versa. So I don’t think you would see this once you had the whole team moved over to 5.1. We were fortunate to have a separate cache server set up that we could point 5.1 instances to while we are getting ready for the switch.