Eclipse Workbench lost

I had a somewhat frustrating experience today: my Eclipse workspace, which I had spent a great deal of time customizing, was suddenly reverted to the default layout. All Perspectives that I created were gone.

The first thing I did was to look at the log file, which said

Unable to load resource file:/<workspace_path>/.metadata/.plugins/org.eclipse.e4.workbench/workbench.xmi

Alright, a little Google research told me that this was a problem with a detached View that I had opened and then closed via the window X button (Alt+F4 also doesn’t work), instead of the view’s X button. Apparently, there’s a bug in Eclipse that lets it freak out completely, but the solution is rather easy:

In the workbench.xmi file look for a <windows>┬átag of type basic:TrimmedWindow┬áthat contains the View you opened, and then delete the whole tag. If you’re lucky, that’s what’s preventing Eclipse from loading your workbench layout and it should be fixed now.

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