Steps to reproduce:
1. Open user attached project
2. Open Test.scene
3. Select the "Test Loader" object in the hierarchy, notice that "Load All Assets" is selected
4. Play in editor and observe the referenced script on this Behaviour is missing warnings in the console
5. Build and run the game with development build checked
6. Observe that an object is not loaded in the build, instead an ArgumentException error appears.

Expected result: AssetBundle.LoadAllAssets should not display any warnings in the editor, object should be loaded in the build instead of displaying an error

Reproduced in: 2017.3.0a1, 2017.2.0b4, 2017.1.0p1, 5.6.2p4, 5.5.4p1
Not reproduced in: 5.5.4f1, 5.4.6f1
Regression since: 5.5.4p1

Fixed in: 2017.3.0a3
Backported to: 2017.2.0b7, 2017.1.0p4