For that script, there should be quotation marks around the two image names only. Quotation marks after a comment character # don't count because all text thereafter is ignored for the rest of it's line.

If there are any other lone quotation marks, don't add to them. Rather remove them. Oh, and be sure a comment character wasn't inadvertently turned into a quotation mark. If so, turn it back. Then try again, and report back. :)

BTW, all your version numbers look fine (close enough to mine not to be any source of trouble).