nopeman Posted June 18, 2013 Share Posted June 18, 2013 when ever i try to play voltz it shows the mojang screen then says " forge mod loader has found a problem with your minecraft installation you have mod sources that are duplicate within your system mod ID: File name mekanism: mekanism.jar mekanism: mekanism-v5.2.0.jar Link to comment Share on other sites More sharing options...
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