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java.lang.NoClassDefFoundError: net/minecraft/client/Minecraft	at sonar.core.helpers.RenderHelper.(RenderHelper.java:30)	at sonar.calculator.mod.common.tileentity.TileEntityGreenhouse.func_73660_a(TileEntityGreenhouse.java:78)	at sonar.calculator.mod.common.tileentity.TileEntityBuildingGreenhouse.func_73660_a(TileEntityBuildingGreenhouse.java:54)	at sonar.calculator.mod.common.tileentity.machines.TileEntityAdvancedGreenhouse.func_73660_a(TileEntityAdvancedGreenhouse.java:45)