Strange, I’m having the exact same error pop up, I’ve no idea. Did you install the UE5.4 preview by any chance, as I did? I’m just wondering what I did to cause this. I’ve done Windows scans to check for corrupt files and restore them but it passed so I don’t know why this is occurring now. I’ve even reinstalled 5.2 as I’ve been getting BSOD during rendering which may or may not be related, but any errors like this are warning flags.