Woo Adrian got yours fixed finally.
(For anyone that cares...) the error was actually NOT in capitalizing the /URL, but rather with the quotation marks within the code. when its 'url=" ' I had copied and pasted a list I'd put together on word, but unfortunately when I did that it copied the more slanted quotation marks, i.e. separate opening and closing quotations. The coding views the closing quotation as a part of the link itself, so it was sending your files, for example on Upon the Alter of Bones, to https://www.heresy-online.net/forums/showthread.php?t=90025" which is incorrect.
For anyone that does html coding... apparently copy/paste from Microsoft Word = fail.
I'll have to go through yet again and edit all of the slanted quotations out... FML.