Bug 2020.2.0b2: Cannot open any projects (Failed to load window layout)

Hi,

Ever since I installed 2020.2.0b2 I cannot open even empty projects in either beta1 or beta2.

It get this dialog:


If I choose Load Default Layout I get back to this dialog.
If I choose Revert Factory Settings then I get a dialog with Continue, after that I get back to this dialog.
Only quit works.

This happens at the end of project creation with both beta1 or beta2.

Editor.log contains the following error:

Code (CSharp):

1. [LAYOUT] About to load Library/CurrentLayout-default.dwlt, keepMainWindow=False
2. Failed to load window layout: System.NullReferenceException: Object reference not set to an instance of an object
3.   at UnityEditor.ContainerWindow.GetWindowID () [0x00070] in <3d7c86b365634083bceadac5c7f36490>:0
4.   at UnityEditor.ContainerWindow.get_windowID () [0x00010] in <3d7c86b365634083bceadac5c7f36490>:0
5.   at UnityEditor.ContainerWindow.SaveGeometry () [0x00001] in <3d7c86b365634083bceadac5c7f36490>:0
6.   at UnityEditor.ContainerWindow.Save () [0x0000d] in <3d7c86b365634083bceadac5c7f36490>:0
7.   at UnityEditor.ContainerWindow.Close () [0x00001] in <3d7c86b365634083bceadac5c7f36490>:0
8.   at UnityEditor.WindowLayout.LoadWindowLayout (System.String path, System.Boolean newProjectLayoutWasCreated, System.Boolean setLastLoadedLayoutName, System.Boolean keepMainWindow) [0x00207] in <3d7c86b365634083bceadac5c7f36490>:0
9.  

Any pointers?

 

I just saw a similar thread about beta1.
Except that solution doesn't work for me because I couldn't find any projects that I can open so far.

 

In your project directory, find "CurrentLayout-default.dwlt" and delete it, then try loading the project.

 

Deleting didn't work.
What worked is creating an empty project in 2020.1.4f1 and copying the file from there.

What is interesting that after that I can start the project even after deleting the damn file.
Successfully starting it once changed something somewhere (probably the registry I think that is where saved layouts are stored)

 

https://forum.unity.com/threads/can-not-launch-unity-due-to-failed-to-load-window-layout.694450/

 

Ok I just got to the point of that thread:

If you load a project with a corrupt CurrentLayout, Unity overwrites the c:\Users\<user>AppData\Roaming\Unity\Editor-5.x\Preferences\Layouts\default\LastLayout.dwlt file before it prompts you the above message.

If you delete your CurrentLayout, Unity will first load the corrupted LastLayout file.

BUT

If you press [Load Default Layout] it replaces the file with the CurrentLayout file with a correct(!) default layout file,
than it is STILL UNABLE TO LOAD it.

So what you should do as a workaround:

1. Press [Load Default Layout]
2. Unity complains that it still cannot load the layout
3. Copy the now correct CurrentLayout-default.dwlt somewhere
4. Press Quit
5. Unity corrupts the file during quitting
6. Copy back the correct CurrentLayout-default.dwlt
7. Start Unity again

 

Oh nice doing what you suggested with "Library/CurrentLayout-default.dwlt" did the trick.

 

Nice! Thanks for helping me get back into my project.

Cheers for the bug getting fixed soon.

 

Thanks! That's fixed my project.