Can't open skeletal mesh or animation editors

I attempted to rename a folder with a large amount of content. UE 5.4 crashed and when I restarted it, I was unable to open the skeletal mesh and animation editors. It doesn’t crash, but nothing appears to happen. I discovered by accident that UE does open a second window, but it’s blank. It shows only when I point to the UE icon on the toolbar (see below:)


I assumed something had gone wrong in the engine, so I uninstalled UE 5.4 and reinstalled it. No luck.
I’ve Imported some characters from Character Creator and need to fix the hair shaders, but I can’t, so I’m really kinda stuck. Any help would be greatly appreciated.