A friend of mine have had almost the same problem. The "repair/install/uninstall" options seem not to work properly sometimes.
You should remove Mohaa of the windows registry before re-installing it (Mohaa, not windows !). Or you can use a program called "cleanSweep" to uninstall it.
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[ThSkr] Draksen
ThrillSeekers Clan
http://www.geocities.com/thskr_clan