when you install, this is what I use for directory,
Linux system
url/forum/
url/forum/games/
url/forum/images/graphics/
in arcade setting I use games/ (not /games/)
all swf goto games folder, all graphics for games goto
url/forum/images/graphics/
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I also made a cleaned up version of all the templates which I posted somewhere around post 75+ I think that and the install script and I get a clean install ever time.
hope that helps anyone having issues with the install.
My Arcade,
DEMO:
http://www.shukenja.com/forum/proarcade.php