diff --git a/src/main/java/net/minecraft/entity/player/EntityPlayerMP.java b/src/main/java/net/minecraft/entity/player/EntityPlayerMP.java
index 97abe69..3af849d 100644
--- a/src/main/java/net/minecraft/entity/player/EntityPlayerMP.java
+++ b/src/main/java/net/minecraft/entity/player/EntityPlayerMP.java
@@ -461,6 +461,8 @@
 
 	public void travelToDimension(int p_71027_1_)
 	{
+		if(mcServer.worldServerForDimension(p_71027_1_) == null)
+			return;
 		int enderLink = ((WorldServer)worldObj).getConfig().portals.enderLink;
 		if (this.dimension == enderLink && p_71027_1_ == enderLink)
 		{
@@ -1050,6 +1052,58 @@
 		this.lastFoodLevel = -1;
 	}
 	
+	/** Safe transferToDimension and setPosition */
+	public boolean setWorldPosition(int dim, double x, double y, double z)
+	{
+		if(dim == this.dimension)
+		{
+			playerNetServerHandler.setPlayerLocation(x, y, z, this.rotationYaw, this.rotationPitch);
+			return true;
+		}
+		if(mcServer.worldServerForDimension(dim) == null)
+			return false;
+		int lastDim = this.dimension;
+		double lastX = this.posX;
+		double lastY = this.posY;
+		double lastZ = this.posZ;
+		setPosition(x, y, z);
+		try {
+			transferToDimension(dim);
+		} catch (RuntimeException e) {
+			setPosition(lastX, lastY, lastZ);
+			this.dimension = lastDim;
+			throw e;
+		}
+		return true;
+	}
+	
+	/** Safe transferToDimension and setPositionAndRotation */
+	public boolean setWorldPositionAndRotation(int dim, double x, double y, double z, float yaw, float pitch)
+	{
+		if(dim == this.dimension)
+		{
+			playerNetServerHandler.setPlayerLocation(x, y, z, yaw, pitch);
+			return true;
+		}
+		if(mcServer.worldServerForDimension(dim) == null)
+			return false;
+		int lastDim = this.dimension;
+		double lastX = this.posX;
+		double lastY = this.posY;
+		double lastZ = this.posZ;
+		float lastYaw = this.rotationYaw;
+		float lastPitch = this.rotationPitch;
+		setPositionAndRotation(x, y, z, yaw, pitch);
+		try {
+			transferToDimension(dim);
+		} catch (RuntimeException e) {
+			setPositionAndRotation(lastX, lastY, lastZ, lastYaw, lastPitch);
+			this.dimension = lastDim;
+			throw e;
+		}
+		return true;
+	}
+	
 	public void setStatisticsFile(StatisticsFile stats)
 	{
 		this.field_147103_bO = stats;
diff --git a/src/main/java/org/ultramine/server/Teleporter.java b/src/main/java/org/ultramine/server/Teleporter.java
index 78c9bac..f2ab461 100644
--- a/src/main/java/org/ultramine/server/Teleporter.java
+++ b/src/main/java/org/ultramine/server/Teleporter.java
@@ -88,15 +88,8 @@
 	{
 		player.getData().core().setLastLocation(WarpLocation.getFromPlayer(player));
 		
-		if(player.dimension != dimension)
-		{
-			player.setPositionAndRotation(x, y, z, yaw, pitch);
-			player.transferToDimension(dimension);
-		}
-		else
-		{
-			player.playerNetServerHandler.setPlayerLocation(x, y, z, yaw, pitch);
-		}
+		if(!player.setWorldPositionAndRotation(dimension, x, y, z, yaw, pitch))
+			player.addChatMessage(new ChatComponentTranslation("teleporter.fail.dim").setChatStyle(new ChatStyle().setColor(EnumChatFormatting.RED)));
 		
 		if(isServer)
 		{
diff --git a/src/main/resources/assets/ultramine/lang/en_US.lang b/src/main/resources/assets/ultramine/lang/en_US.lang
index 997323b..a3daf7d 100644
--- a/src/main/resources/assets/ultramine/lang/en_US.lang
+++ b/src/main/resources/assets/ultramine/lang/en_US.lang
@@ -1,5 +1,6 @@
 #Server core
 teleporter.fail.cooldownd=You will be able to teleport in %s seconds
+teleporter.fail.dim=Failed to teleport: the world is not exists or was held
 teleporter.delay=You will be teleported in %s seconds
 teleporter.canceled=Teleportation canceled
 
diff --git a/src/main/resources/assets/ultramine/lang/ru_RU.lang b/src/main/resources/assets/ultramine/lang/ru_RU.lang
index 6655667..8e7ddeb 100644
--- a/src/main/resources/assets/ultramine/lang/ru_RU.lang
+++ b/src/main/resources/assets/ultramine/lang/ru_RU.lang
@@ -1,5 +1,6 @@
 #Server core
 teleporter.fail.cooldownd=Вы сможете телепортироваться через %s секунд
+teleporter.fail.dim=Не удалось телепортироваться: мир не существует или заблокирован
 teleporter.delay=Вы будете телепортированы через %s секунд
 teleporter.canceled=Телепортация отменена