Started Work in MAC Gui.

block/crafting/BlockMolecularAssembler.java

@@ -3,12 +3,17 @@ package appeng.block.crafting;
 import java.util.EnumSet;
 
 import net.minecraft.block.material.Material;
+import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.world.IBlockAccess;
+import net.minecraft.world.World;
+import net.minecraftforge.common.util.ForgeDirection;
 import appeng.block.AEBaseBlock;
 import appeng.client.render.BaseBlockRender;
 import appeng.client.render.blocks.RenderQuartzGlass;
 import appeng.core.features.AEFeature;
+import appeng.core.sync.GuiBridge;
 import appeng.tile.crafting.TileMolecularAssembler;
+import appeng.util.Platform;
 import cpw.mods.fml.relauncher.Side;
 import cpw.mods.fml.relauncher.SideOnly;
 
@@ -36,4 +41,15 @@ public class BlockMolecularAssembler extends AEBaseBlock
 		return super.shouldSideBeRendered( w, x, y, z, side );
 	}
 
+	@Override
+	public boolean onActivated(World w, int x, int y, int z, EntityPlayer p, int side, float hitX, float hitY, float hitZ)
+	{
+		TileMolecularAssembler tg = getTileEntity( w, x, y, z );
+		if ( tg != null && !p.isSneaking() )
+		{
+			Platform.openGUI( p, tg, ForgeDirection.getOrientation( side ), GuiBridge.GUI_MAC );
+			return true;
+		}
+		return false;
+	}
 }