Unity AssetBundle manager error

So i'm following the tutorial from the Unity Asset Bundles and at Example 3 and 4. They use variants. But whenever i try to play the test scenes and click on load i get this error:

Tutorial:
https://unity3d.com/learn/tutorials/topics/scripting/assetbundles-and-assetbundle-manager

any idea why? the normal Asset Bundle loading works fine.

 

EDIT:

i have found out, it's not the variants part. Every thing i try uses local assetbundle server gives this error. As if it's unable to find the local server. If i try it in simulation mode it works fine. I made a map called AssetBundleManager which is supposed to be the server. any help?

 

No one?

 

Any luck with this problem? I am having the same one

 

I don't know why but i fixed it. Just update the unity to 2017.1.1 and the problem is gone. Seems some version will cause this error. Try another version.