What type of file system is not priority number one for 98% of the internet. Unless your job involes something with multi-gigabyte files (Photoshop and Final Cut Studio users give yourselves a round of applause!) it doesn’t really matter. Until the time comes when your old applications can’t function.
My lovely mother gave to yours truly a copy of the Star Craft battle chest for being an awesome son of twenty three years (Golly I don’t feel old). After downloading the latest patch that abolishes the CD requirement after eleven freaking years I clicked on the application only to face…

This enterprising (yet utterly clueless when it comes to programming) geek googled that very phrase. Viola this very site topped the list. After a quick translation from Swedish the Engrish version told me exactly what went wrong.
Since Mac OS X 10.3 Panther there has been the option to format your hard drive as “Mac OS Extended (case sensitive/journaled).” Ignoring what Journaling is (a simple google search provides more accurate and interesting reads than I could ever hope to write on the subject), that “case sensitive” part is where Star Craft kept getting into trouble.
The solution is simply renaming the file “Local” to “local” in the starcraft files folder. Do that, and you’ll be stomping zerglings as quickly as can be!