Quote - ... and I am also puzzled as to why in the error message reads GS_Shovels_B.jpg.jpg should there be a double jpg at the end

That would appear to be the problem, so it's a mistake in the file you're trying to load.
Try opening the file in a text editor and (assuming it is a text file) you should be able to correct it.

You might also want to report the defect to DAZ.