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Lt. Commander
Join Date: Dec 2007
Posts: 120
# 2
01-16-2010, 06:28 PM
Depending on where you got the installer, some are one-shot. This means you need to re-extract them from the zip each time you want to use them, if you just run the installer twice without doing so it no longer has the game data files (they are moved the first time, not copied).