Hi @Jim Kring, the 'jki_rsc_toolkits_palette v1.1-1' add-on installed on a retry shortly after posting the original message.
I've just retried the others and unfortunately I'm getting identical error details, tried each package on its own and all 4 in one go - no difference.
If I manually enter the URL from the last line of each error section into my Edge browser address field, Edge downloads a ".vip" file, but I've no way of knowing if it's a valid file as I'm unable to open them.