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Fixed in 2021.1.X

Fixed in 2019.4.X, 2020.1.X, 2020.2.X

Votes

58

Found in

2020.1

2020.2

Issue ID

1275270

Regression

Yes

[window layout] cannot load editor layout, stuck in infinite loop of "failed to load window layout"

Window management

-

steps to repro:
1a. copy the attached "corrupted" LastLayout.dwlt into ~/Library/Preferences/Unity/Editor-5.x/Layouts/default/ (or win/linux equivalent directory)
1b. create a new project via Unity hub

Expected: project is created and opens (and... revert factory settings / load default layout buttons fix the issue and Unity opens)
Actual: project is created but then a dialog appears and user is stuck in infinite loop that can only be stopped by selecting "quit"

repro: 2020.2.0a21, 2020.1.5f1
no repro: 2019.4.6f1

Note:
- found on MacOS
- "Failed to load window layout" window causes user to be caught in an infinite loop since nothing fixes the issue so the window will stay
- 2019.4.6f1 can successfully open with the "corrupted" LastLayout.dwlt but does show console errors

Workaround:
- try moving or deleting the files at
- ~/Library/Preferences/Unity/Editor-5.x/Layouts/default/LastLayout.dwlt (or equivalent path)
- <PROJECT>/Library/CurrentLayout-default.dwlt

  1. Resolution Note (fix version 2021.1):

    You can resolve this issue by upgrading to the appropriate fixed version:
    - 2021.1.0a5
    - 2020.2.0b12
    - 2020.1.14f1

    What has changed?
    - “Failed to load window layout” popup dialog now displays the error that occurred when loading the layout.
    - Choosing “quit” will remove the broken layout from the cache.
    - Choosing “Load default layout” or “revert factory settings” no longer results in an infinite loop with “Failed to load window layout”
- A console error will indicate why Unity failed to load the window layout - this can be cleared.

  2. Resolution Note (fix version 2020.2):

    Tested fixed in 2020.2.0b12

    Unity no longer creates an infinite loop of popup dialogs when attempting to load an invalid or corrupted layout.

  3. Resolution Note (fix version 2020.1):

    Tested fixed in 2020.1.14f1

    Unity no longer creates an infinite loop of popup dialogs when attempting to load an invalid or corrupted layout.

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Comments (51)

  1. scottjdaley

    Sep 05, 2020 00:00

    I'm experiencing the same problem on Windows (2020.2.0a21 and 2020.2.0b1). However, I have been unable to find a workaround. Deleting LastLayout.dwlt and reverting to factory default settings did not help.

    From Editor.log:

    [MODES] Loading mode Default (0) for mode-current-id-Dummy
    [LAYOUT] About to load Library/CurrentLayout-default.dwlt, keepMainWindow=False
    Failed to load window layout: System.NullReferenceException: Object reference not set to an instance of an object
    at UnityEditor.ContainerWindow.GetWindowID () [0x00070] in <21b2c32fceb84be48b4ad9068cc533dd>:0
    at UnityEditor.ContainerWindow.get_windowID () [0x00010] in <21b2c32fceb84be48b4ad9068cc533dd>:0
    at UnityEditor.ContainerWindow.SaveGeometry () [0x00001] in <21b2c32fceb84be48b4ad9068cc533dd>:0
    at UnityEditor.ContainerWindow.Save () [0x0000d] in <21b2c32fceb84be48b4ad9068cc533dd>:0
    at UnityEditor.ContainerWindow.Close () [0x00001] in <21b2c32fceb84be48b4ad9068cc533dd>:0
    at UnityEditor.WindowLayout.LoadWindowLayout (System.String path, System.Boolean newProjectLayoutWasCreated, System.Boolean setLastLoadedLayoutName, System.Boolean keepMainWindow) [0x00207] in <21b2c32fceb84be48b4ad9068cc533dd>:0
    UnityEngine.StackTraceUtility:ExtractStackTrace ()
    UnityEngine.DebugLogHandler:LogFormat (UnityEngine.LogType,UnityEngine.Object,string,object[])
    UnityEngine.Logger:Log (UnityEngine.LogType,object)
    UnityEngine.Debug:LogError (object)
    UnityEditor.WindowLayout:LoadWindowLayout (string,bool,bool,bool)
    UnityEditor.WindowLayout:LoadProjectLayout (bool)
    UnityEditor.WindowLayout:LoadCurrentModeLayout (bool)
    UnityEditor.WindowLayout:LoadDefaultWindowPreferences ()

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