Someone noticed that it is currently impossible to remove worn armor textures. Trying to do so results in the following error:
err 1613121059032.txt

I made a separate issue for the error you just mentioned. Judging by the stacktraces, they are different errors. Besides, the item deletion only malfunctions in certain circumstances. Deleting armor textures always malfunctions.

Had another report with the following log err_1613127083044.txt, relating to deleting items. Perhaps the delete button itself is broken and not only the delete button in the textures section.

This will be solved in Editor 8.5