Thanks for the latest update , I used to have 45 missing images and now have a lot fewer (14)
[Image Library] 14 workshop skin ID's for image batch (Kits) are invalid! They may have been removed from the workshop

IDs: 1633859273, 10078, 14181, 10088, 14178, 10112, 10019, 10059,
10010, 10051, 10008, 10021, 10023 and 10064

Image batch (Kits) has been stored successfully

Glad to say I now have only one image that is "invalid"  IDs: 1633859273

Thanks again