HELP! Unlinked, deleted library objects are disrupting my work flow!

Hi,

Could someone please tell me how I can stop Photoshop from trying to "find" unlinked files that I deleted ages ago?

My PSD keeps calling for library objects (see screenshot 1) which are no longer in the layers, or in the library palette (screenshot 2) and so therefore, I don't see how they can in any way be linked anywhere to my file but for some reason when I open Photoshop, it still thinks these files are "missing" and it keeps asking for them to be relinked!

It's causing a whole host of issues - i.e. not allowing me to export - and I just want to get rid of this reference to old objects that don't belong anywhere near this project.

Can anyone help!? Thanks in advance!

screenshot 1

screenshot 2