diff --git a/core/sync/GuiBridge.java b/core/sync/GuiBridge.java
index 5d2eb4534..923ddb085 100644
--- a/core/sync/GuiBridge.java
+++ b/core/sync/GuiBridge.java
@@ -54,6 +54,7 @@ import appeng.container.implementations.ContainerUpgradeable;
 import appeng.container.implementations.ContainerVibrationChamber;
 import appeng.container.implementations.ContainerWireless;
 import appeng.container.implementations.ContainerWirelessTerm;
+import appeng.core.AELog;
 import appeng.helpers.IInterfaceHost;
 import appeng.helpers.IPriorityHost;
 import appeng.helpers.WirelessTerminalGuiObject;
@@ -197,7 +198,16 @@ public enum GuiBridge implements IGuiHandler
 			Constructor[] c = Container.getConstructors();
 			if ( c.length == 0 )
 				throw new AppEngException( "Invalid Gui Class" );
-			return findConstructor( c, inventory, tE ).newInstance( inventory, tE );
+
+			Constructor target = findConstructor( c, inventory, tE );
+
+			if ( target == null )
+			{
+				AELog.severe( "Cannot find " + Container.getName() + "( " + typeName( inventory ) + ", " + typeName( tE ) + " )" );
+				return null;
+			}
+
+			return target.newInstance( inventory, tE );
 		}
 		catch (Throwable t)
 		{
@@ -213,7 +223,15 @@ public enum GuiBridge implements IGuiHandler
 			if ( c.length == 0 )
 				throw new AppEngException( "Invalid Gui Class" );
 
-			return findConstructor( c, inventory, tE ).newInstance( inventory, tE );
+			Constructor target = findConstructor( c, inventory, tE );
+
+			if ( target == null )
+			{
+				AELog.severe( "Cannot find " + Container.getName() + "( " + typeName( inventory ) + ", " + typeName( tE ) + " )" );
+				return null;
+			}
+
+			return target.newInstance( inventory, tE );
 		}
 		catch (Throwable t)
 		{
@@ -221,6 +239,14 @@ public enum GuiBridge implements IGuiHandler
 		}
 	}
 
+	private String typeName(Object inventory)
+	{
+		if ( inventory == null )
+			return "NULL";
+
+		return inventory.getClass().getName();
+	}
+
 	private Constructor findConstructor(Constructor[] c, InventoryPlayer inventory, Object tE)
 	{
 		for (Constructor con : c)