"Could not produce class with ID 1108" error on Dev Build

Unity Engine
1

When loading scene from Addressable I have this error.

Could not produce class with ID 1108.
(Filename: .\Runtime/Serialize/PersistentManager.cpp Line: 1530)

From Unity class reference it means class PreviewAssetType. Is this some important error? Game is working OK, just printing this error.

Unity 2018.4.9. Addressables 1.2.2.

2

I have the same issue

3

Yeah, I have that too, it is a bug, I intended to put bug report through when I come back from Unite but if one of you could put it in thatā€™d be cool. Itā€™s an editor-side class being built into one of the bundles.

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4

Which class? I have one Editor class in addressable link.xml file:

  <assembly fullname="UnityEditor, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null">
    <type fullname="UnityEditor.MonoScript" preserve="all" />
    <type fullname="UnityEditor.Audio.AudioMixerController" preserve="all" />
    <type fullname="UnityEditor.Audio.AudioMixerGroupController" preserve="all" />
    <type fullname="UnityEditor.Audio.AudioMixerSnapshotController" preserve="all" />
  </assembly>
5

1108 is PreviewAssetType. Nothing UnityEditor.* should be in link.xml but this is not a link.xml error anyway. One of these seems to make it into the asset serialization itself and since the class will never exist on a build, it displays the error when loading the affected object.

6

@AlkisFortuneFish We are about to publish a game where this issue is shown, Is this bug a good reason to delay it?

7

Thatā€™s your call ultimately, but it does not seem to actually cause any immediately obvious issues.

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8

Same error here. I donā€™t believe it is PreviewAssetType. I was not able to find it anywhere in UnityEngine.

9

That is because it is not in UnityEngine, it is in UnityEditor. The issue appears to be that some Editor-side assets are leaking into the bundles.

10

We are also seeing this issue since updating to Unity 2018.4.11f1 (from 2018.4.8f1). We are using Addressables v1.2.4. It appears in builds on multiple platforms (both PC and Switch for example).

Has this issue yet been officially reported to Unity? Is a fix in the works? Anything we can do on our end to resolve it?

Thanks for any insight into this!

11

Hey @Greyborn it has been reported and it is being worked on. Alkis is exactly correct, it is possible for editor types to make their way into the build depending on the type. To my knowledge this is unfortunately an Editor side change so the fix will require an Editor update when itā€™s resolved. Thereā€™s not an ETA for the fix that I can currently give.

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12

Same issue.
Could not produce class with ID 1108.
This could be caused by a class being stripped from the build even though it is needed. Try disabling ā€˜Strip Engine Codeā€™ in Player Settings.
ā€¦
ā€¦
(Filename: ./Runtime/Serialize/PersistentManager.cpp Line: 1543)

Unity 2019.2.10f1
Addressables 1.2.4 using Remote Assets Bundles
Xcode latest.
Strip Engine Code : Disabled
Managed Stripping Level: Low

Any workarounds until a fix is available? Cuz I am unable to launch the game and the loading gets stuck when this error happens.

13

Hey @AmitSuri unfortunately I believe youā€™re hitting an engine bug as well. Itā€™s actually the exact opposite problem from stripping too much. There are Editor types that should be stripped (by default, not in relation to your code stripping level) that are getting pulled into the build.

Itā€™s not a bug that Addressables can fix in the package itself. The fix will require an editor update. I do know itā€™s a pretty urgent issue on our end but I donā€™t have an ETA at this time. No workarounds that I know of. If I find out any more information Iā€™ll post it in this thread.

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14

Just to point out, we are getting this over here but the loading of our objects does not actually fail, so everything works.

15

I still have same problem (errors but assets are loading).
One type of assets that is triggering error is fbx added as addressable with imported animation. When I disable import animations it loads without errors (but without animations :slight_smile: ).

16

ā€œWhen I disable import animations it loads without errorsā€? Please help me understand this statement.
An example would be great get into my thick skull :slight_smile:

17

In fbx Import Settings in Animations tab I disable ā€œImport Animationā€, so only model is imported without any animations.

So really no use fix if you need animations. I was just testing which assets could trigger this error and why.

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18

Is there a bug to track for this? Any updates on a fix? Thanks!

19

@Ryanc_unity would know more than I would on this one.

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20

Sadly the public tracker does not list the explicit patch versions. That being said, this has been fixed, but required an editor change. For the 2018.4 cycle, the fix is in the 2018.4.13 version and in the patch notes it is listed as:

  • Build Pipeline: Added flag kTypeIsEditorOnly trait to allow items to be pulled into build data depending on the situation. (1190029, 1193004)
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