Present GUI should only open if its block is still present server side

src/main/java/team/chisel/block/BlockPresent.java

@@ -109,7 +109,9 @@ public class BlockPresent extends Block implements ICarvable {
 	@Override
 	public boolean onBlockActivated(World world, int x, int y, int z, EntityPlayer player, int hitX, float hitY, float hitZ, float p_149727_9_) {
 		if (!world.isSideSolid(x, y + 1, z, ForgeDirection.DOWN)) {
-			player.openGui(Chisel.instance, 2, world, x, y, z);
+			if (!world.isRemote) {
+				player.openGui(Chisel.instance, 2, world, x, y, z);
+	        }
 			return true;
 		}
 		return false;