I believe I have messed up...

src/main/java/net/montoyo/wd/client/ClientProxy.java

@@ -167,7 +167,7 @@ public class ClientProxy extends SharedProxy implements CefDisplayHandler/*, IJS
 		BlockSide side = BlockSide.values()[result.getDirection().ordinal()];
 		
 		Multiblock.findOrigin(mc.level, pos, side, null);
-		TileEntityScreen te = (TileEntityScreen) mc.level.getBlockEntity(pos.toBlock());
+		ScreenBlockEntity te = (ScreenBlockEntity) mc.level.getBlockEntity(pos.toBlock());
 
 		ScreenData sc = te.getScreen(side);
 		

src/main/java/net/montoyo/wd/client/gui/camera/KeyboardCamera.java

@@ -9,14 +9,12 @@ import net.minecraft.world.phys.Vec3;
 import net.minecraftforge.client.event.ViewportEvent;
 import net.minecraftforge.event.TickEvent;
 import net.montoyo.wd.client.js.WDRouter;
+import net.montoyo.wd.entity.ScreenBlockEntity;
 import net.montoyo.wd.entity.ScreenData;
-import net.montoyo.wd.entity.TileEntityScreen;
+import net.montoyo.wd.utilities.data.BlockSide;
-import net.montoyo.wd.utilities.BlockSide;
-
-import java.util.concurrent.CompletableFuture;
 
 public class KeyboardCamera {
-    private static TileEntityScreen tes;
+    private static ScreenBlockEntity tes;
     private static BlockSide side;
 
     private static double oxCrd = -1;
@@ -49,7 +47,7 @@ public class KeyboardCamera {
     protected static void pollElement() {
         if (activeTask != null) return;
 
-        TileEntityScreen teTmp = tes;
+        ScreenBlockEntity teTmp = tes;
         BlockSide sdTmp = side;
 
         // async nonsense can occur here
@@ -92,7 +90,6 @@ public class KeyboardCamera {
                                                         }
                             """.replace("\n", "")
             ).thenAccept((o1) -> {
-                System.out.println(o1);
                 updateCrd(o1);
                 activeTask = null;
             });
@@ -187,7 +184,7 @@ public class KeyboardCamera {
         event.setPitch(angle[0]);
     }
 
-    public static void focus(TileEntityScreen screen, BlockSide side) {
+    public static void focus(ScreenBlockEntity screen, BlockSide side) {
         KeyboardCamera.tes = screen;
         KeyboardCamera.side = side;
     }

src/main/java/net/montoyo/wd/data/ScreenConfigData.java

@@ -63,12 +63,12 @@ public class ScreenConfigData extends GuiData {
 			return null;
 		
 		BlockEntity te = world.getBlockEntity(pos.toBlock());
-		if (te == null || !(te instanceof TileEntityScreen)) {
+		if (te == null || !(te instanceof ScreenBlockEntity)) {
 			Log.error("TileEntity at %s is not a screen; can't open gui!", pos.toString());
 			return null;
 		}
 		
-		return new GuiScreenConfig(Component.nullToEmpty(""), (TileEntityScreen) te, side, friends, friendRights, otherRights);
+		return new GuiScreenConfig(Component.nullToEmpty(""), (ScreenBlockEntity) te, side, friends, friendRights, otherRights);
 	}
 	
 	@Override

src/main/java/net/montoyo/wd/entity/ScreenBlockEntity.java

@@ -112,7 +112,7 @@ public class ScreenBlockEntity extends BlockEntity {
             return;
 
         // very important to close these
-        for (Screen screen : screens) {
+        for (ScreenData screen : screens) {
             if (screen.browser != null) {
                 screen.browser.close(true);
                 screen.browser = null;
@@ -234,7 +234,7 @@ public class ScreenBlockEntity extends BlockEntity {
 
     public void clear() {
         // very important that these get closed
-        for (Screen screen : screens)
+        for (ScreenData screen : screens)
             if (screen.browser != null) {
                 screen.browser.close(true);
                 screen.browser = null;

src/main/java/net/montoyo/wd/entity/ScreenData.java

@@ -15,6 +15,10 @@ import net.montoyo.wd.client.ClientProxy;
 import net.montoyo.wd.config.CommonConfig;
 import net.montoyo.wd.core.ScreenRights;
 import net.montoyo.wd.utilities.*;
+import net.montoyo.wd.utilities.data.BlockSide;
+import net.montoyo.wd.utilities.data.Rotation;
+import net.montoyo.wd.utilities.math.Vector2i;
+import net.montoyo.wd.utilities.serialization.NameUUIDPair;
 import org.cef.browser.CefBrowser;
 
 import java.util.ArrayList;

src/main/java/net/montoyo/wd/item/ItemLaserPointer.java

@@ -82,7 +82,7 @@ public class ItemLaserPointer extends Item implements WDItem {
 		deselectScreen();
 	}
 	
-	private static void laserClick(TileEntityScreen tes, BlockSide side, ScreenData scr, Vector2i hit) {
+	private static void laserClick(ScreenBlockEntity tes, BlockSide side, ScreenData scr, Vector2i hit) {
 		tes.handleMouseEvent(side, ClickControl.ControlType.MOVE, hit, -1);
 		if (pointedScreen == tes && pointedScreenSide == side) {
 			long t = System.currentTimeMillis();

src/main/java/net/montoyo/wd/item/ItemLinker.java

@@ -96,7 +96,7 @@ public class ItemLinker extends Item implements WDItem {
             return InteractionResult.SUCCESS;
         }
 
-        ScreenData scr = ((TileEntityScreen) te).getScreen(side);
+        ScreenData scr = ((ScreenBlockEntity) te).getScreen(side);
         if(scr == null)
             Util.toast(context.getPlayer(), "turnOn");
         else if ((scr.rightsFor(context.getPlayer()) & ScreenRights.MANAGE_UPGRADES) == 0)

src/main/java/net/montoyo/wd/item/ItemOwnershipThief.java

@@ -61,7 +61,7 @@ public class ItemOwnershipThief extends Item implements WDItem {
                 if (te == null || !(te instanceof ScreenBlockEntity))
                     return InteractionResult.SUCCESS;
 
-                TileEntityScreen tes = (TileEntityScreen) te;
+                ScreenBlockEntity tes = (ScreenBlockEntity) te;
                 ScreenData scr = tes.getScreen(side);
                 if(scr == null)
                     return InteractionResult.SUCCESS;

src/main/java/net/montoyo/wd/item/ItemScreenConfigurator.java

@@ -47,7 +47,7 @@ public class ItemScreenConfigurator extends Item implements WDItem {
             return InteractionResult.SUCCESS;
         }
 
-        ScreenData scr = ((TileEntityScreen) te).getScreen(side);
+        ScreenData scr = ((ScreenBlockEntity) te).getScreen(side);
         if(scr == null)
             Util.toast(context.getPlayer(), "turnOn");
         else

src/main/java/net/montoyo/wd/net/client_bound/S2CMessageAddScreen.java

@@ -39,7 +39,7 @@ public class S2CMessageAddScreen extends Packet {
 			screens[i] = tes.getScreen(i);
 	}
 	
-	public S2CMessageAddScreen(TileEntityScreen tes, ScreenData... toSend) {
+	public S2CMessageAddScreen(ScreenBlockEntity tes, ScreenData... toSend) {
 		clear = false;
 		pos = new Vector3i(tes.getBlockPos());
 		screens = toSend;