I have several custom editor windows. Today I had a Unity crash and when I reopened it I was told that there was a problem loading the layout. I opted to load a default layout instead, but now cannot open my custom editor windows from the Window → menu. The options are there, but nothing happens when I click on it. This window was open when Unity crashed.
Any ideas?
Here’s how I resolved the issue.
Go to Window → Layout
Choose a new Layout (I went with Default)
This forces Unity to get rid of any existing Layout config info. I could then reopen my old editor windows.
This can happen because Unity encountered an error while reloading/recompiling your project, and now is messed up. What always works for me: reload the project without your windows, change some code somewhere so Unity recompiles (don’t un-focus Unity’s window while the “working” icon animation is doing its thing). Close Unity and finally reopen your project. Your windows should be available now.
6 years later I am having the exact same issue, and the same fix works… speechless
Woaw thanks a lot, i tried reloading unity several times, change my custom editor were the layout was bugged, nothing.
I deleted all Roaming/Local and Local Low files, nothing else, then i did your mehtod, just picking the "Default " Layout, and it cleaned my 5 bugged invisible layout i had stuck on start and preventing me to reloading them again.
Perfect and quick fix^^.
(I fear it was a new Unity 2020 alpha bug)
Same thing happened to me. using Unity 2018. Thanks for the fix.