diff --git a/common/mekanism/client/gui/GuiLogisticalSorter.java b/common/mekanism/client/gui/GuiLogisticalSorter.java
index 84123d933..3c5142df5 100644
--- a/common/mekanism/client/gui/GuiLogisticalSorter.java
+++ b/common/mekanism/client/gui/GuiLogisticalSorter.java
@@ -42,12 +42,17 @@ public class GuiLogisticalSorter extends GuiMekanism
 	
 	public int getScroll()
 	{
-		return Math.max(Math.min((int)(scroll*125), 125), 0);
+		return Math.max(Math.min((int)(scroll*123), 123), 0);
 	}
 	
 	public int getFilterIndex()
 	{
-		return 0;
+		if(tileEntity.filters.size() <= 4)
+		{
+			return 0;
+		}
+		
+		return (int)((tileEntity.filters.size()*scroll) - (4F/(float)tileEntity.filters.size()));
 	}
 	
 	@Override
@@ -97,7 +102,7 @@ public class GuiLogisticalSorter extends GuiMekanism
 		
 		if(isDragging)
 		{
-			scroll = (float)(yAxis-18-dragOffset)/123F;
+			scroll = Math.min(Math.max((float)(yAxis-18-dragOffset)/123F, 0), 1);
 		}
 	}
 	
diff --git a/common/mekanism/common/transporter/TransporterStack.java b/common/mekanism/common/transporter/TransporterStack.java
index ef425ec3e..9182a6dfb 100644
--- a/common/mekanism/common/transporter/TransporterStack.java
+++ b/common/mekanism/common/transporter/TransporterStack.java
@@ -168,6 +168,12 @@ public class TransporterStack
 		if(!tileEntity.worldObj.isRemote)
 		{
 			int index = pathToTarget.indexOf(Object3D.get(tileEntity))-1;
+			
+			if(index < 0)
+			{
+				return null;
+			}
+			
 			return pathToTarget.get(index);
 		}
 		else {
@@ -200,7 +206,14 @@ public class TransporterStack
 		{
 			return Object3D.get(tileEntity).sideDifference(getPrev(tileEntity)).ordinal();
 		}
-		else if(progress >= 50)
+		else if(progress == 50)
+		{
+			if(getNext(tileEntity) != null)
+			{
+				return getNext(tileEntity).sideDifference(Object3D.get(tileEntity)).ordinal();
+			}
+		}
+		else if(progress > 50)
 		{
 			return getNext(tileEntity).sideDifference(Object3D.get(tileEntity)).ordinal();
 		}
diff --git a/common/mekanism/common/util/TransporterUtils.java b/common/mekanism/common/util/TransporterUtils.java
index b72170428..6b089314d 100644
--- a/common/mekanism/common/util/TransporterUtils.java
+++ b/common/mekanism/common/util/TransporterUtils.java
@@ -188,13 +188,13 @@ public final class TransporterUtils
 		} 
 		else {
 			ISidedInventory sidedInventory = (ISidedInventory) inventory;
-			int[] slots = sidedInventory.getAccessibleSlotsFromSide(side);
+			int[] slots = sidedInventory.getAccessibleSlotsFromSide(ForgeDirection.getOrientation(side).getOpposite().ordinal());
 
 			for(int get = 0; get <= slots.length - 1; get++) 
 			{
 				int slotID = slots[get];
 
-				if(sidedInventory.isItemValidForSlot(slotID, itemStack) && sidedInventory.canInsertItem(slotID, itemStack, side)) 
+				if(sidedInventory.isItemValidForSlot(slotID, itemStack) && sidedInventory.canInsertItem(slotID, itemStack, ForgeDirection.getOrientation(side).getOpposite().ordinal())) 
 				{
 					ItemStack inSlot = inventory.getStackInSlot(slotID);
 
@@ -267,13 +267,13 @@ public final class TransporterUtils
 		} 
 		else {
 			ISidedInventory sidedInventory = (ISidedInventory) inventory;
-			int[] slots = sidedInventory.getAccessibleSlotsFromSide(side);
+			int[] slots = sidedInventory.getAccessibleSlotsFromSide(ForgeDirection.getOrientation(side).getOpposite().ordinal());
 
 			for(int get = 0; get <= slots.length - 1; get++) 
 			{
 				int slotID = slots[get];
 
-				if(sidedInventory.isItemValidForSlot(slotID, itemStack) && sidedInventory.canInsertItem(slotID, itemStack, side)) 
+				if(sidedInventory.isItemValidForSlot(slotID, itemStack) && sidedInventory.canInsertItem(slotID, itemStack, ForgeDirection.getOrientation(side).getOpposite().ordinal())) 
 				{
 					ItemStack inSlot = inventory.getStackInSlot(slotID);
 
@@ -329,7 +329,7 @@ public final class TransporterUtils
 		} 
 		else {
 			ISidedInventory sidedInventory = (ISidedInventory)inventory;
-			int[] slots = sidedInventory.getAccessibleSlotsFromSide(side);
+			int[] slots = sidedInventory.getAccessibleSlotsFromSide(ForgeDirection.getOrientation(side).getOpposite().ordinal());
 
 			if(slots != null) 
 			{
@@ -341,7 +341,7 @@ public final class TransporterUtils
 					{
 						ItemStack toSend = sidedInventory.getStackInSlot(slotID);
 
-						if(sidedInventory.canExtractItem(slotID, toSend, side)) 
+						if(sidedInventory.canExtractItem(slotID, toSend, ForgeDirection.getOrientation(side).getOpposite().ordinal())) 
 						{
 							sidedInventory.setInventorySlotContents(slotID, null);