Loading scene from asset bundle fails in Unity 4

Question

I used to load a level (scene) from a bundle after I it is downloaded in Unity 3. Same code fails to run in Unity 4 throwing an exception saying that :

Level 'name of my scene' (-1) couldn't be loaded because it has not been added to the build settings. To add a level to the build settings use the menu File->Build Settings...

Here is a code I am using:

 ...
 stream = new WWW(url));
 yield return stream;
 stream.assetBundle.LoadAll();
 Application.LoadLevel(levelName);
 ...

Even the Unity's sample project generates the same exception and doesn't work.

Please note that the scene is not available in the starter package and has to be loaded from a bundle.

Any idea?

Answer 1

Best Answer

Answer by Ab00 · Nov 20, 2012 at 04:05 AM

The problem was that in Unity 4 when you want to load a level (scene) the name is case-sensitive. In Unity 3 this was not case-sensitive.

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Kryptos · Nov 20, 2012 at 08:23 AM 0

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As far as I know, every string-based method has been case-sensitive in Unity for ages.

Ab00 · Nov 20, 2012 at 08:41 AM 0

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Well, I have to downgrade and test it again in unity 3.x to be 100% sure but as far as I look at my codes from before I used call ToLower() before loading the level and it used to work.

vikram Jadhav · Dec 22, 2013 at 02:02 PM 1

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Thanks!

I was having the same issue. As soon as I started using the case-sensitive name it worked. Note that, the issue wasn't really apparent as loading scene without asset bundle doesn't require case-sensitive scene name.

Answer 2

Answer by Baastax · Nov 19, 2012 at 12:14 PM

You can't use Application.LoadLevel to load assets in asset bundles.

Instead you should call Instantiate(stream.assetBundle.mainAsset);

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Ab00 · Nov 19, 2012 at 10:50 PM 0

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I am not instantiating an object. What I want to do is loading a scene which is inside a bundle.

Kryptos · Nov 20, 2012 at 08:24 AM 0

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@Baastax you can load scenes that are inside bundles.

cowlinator · May 08, 2013 at 05:22 PM 0

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This is incorrect. stream.assetBundle.mainAsset is always null for a streamed scene assetBundle.

Loading scene from asset bundle fails in Unity 4

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