Hi Paul
welcome to the forums
unfortuately the script currently does not handle upper cased letters. if you want to keep your upper cased version you can 301 redirect the address of the lower cased version to the location of the upper cased version and the PageRank / link popularity of the link will parse through.
the other option would be to switch your normal filepath to the lower cased version if it is easy.
going forward the case sensitivity is one of the things we hope to get fixed with the script.