Check getAccessibleSlotsFromSide for null returns.

helpers/DualityInterface.java

@@ -1052,8 +1052,13 @@ public class DualityInterface implements IGridTickable, ISegmentedInventory, ISt
 						if ( te instanceof IInventory && ((IInventory) te).getSizeInventory() == 0 )
 							continue;
 
-						if ( te instanceof ISidedInventory && ((ISidedInventory) te).getAccessibleSlotsFromSide( s.getOpposite().ordinal() ).length == 0 )
+						if ( te instanceof ISidedInventory )
-							continue;
+						{
+							int[] sides = ((ISidedInventory) te).getAccessibleSlotsFromSide( s.getOpposite().ordinal() );
+
+							if ( sides == null || sides.length == 0 )
+								continue;
+						}
 
 						if ( mop.blockX == te.xCoord && mop.blockY == te.yCoord && mop.blockZ == te.zCoord )
 						{

util/Platform.java

@@ -1470,7 +1470,13 @@ public class Platform
 				for (ForgeDirection dir : ForgeDirection.VALID_DIRECTIONS)
 				{
 					int offset = 0;
-					for (Integer Side : ((ISidedInventory) target).getAccessibleSlotsFromSide( dir.ordinal() ))
+
+					int[] sides = ((ISidedInventory) target).getAccessibleSlotsFromSide( dir.ordinal() );
+
+					if ( sides == null )
+						return 0;
+
+					for (Integer Side : sides)
 					{
 						int c = (Side << (offset++ % 8)) ^ (1 << dir.ordinal());
 						hash = c + (hash << 6) + (hash << 16) - hash;

util/inv/AdaptorISpecialInventory.java

@@ -85,6 +85,7 @@ public class AdaptorISpecialInventory extends InventoryAdaptor
 		{
 			ISidedInventory sided = (ISidedInventory) i;
 			int slots[] = sided.getAccessibleSlotsFromSide( d.ordinal() );
+
 			if ( slots == null )
 				return false;
 

util/inv/WrapperInventoryRange.java

@@ -30,6 +30,7 @@ public class WrapperInventoryRange implements IInventory
 	public WrapperInventoryRange(IInventory a, int[] s, boolean ignoreValid) {
 		src = a;
 		slots = s;
+
 		if ( slots == null )
 			slots = new int[0];