Bugfix

src/at/pcgamingfreaks/MinePacks/Database/Database.java

@@ -120,10 +120,14 @@ public void getBackpack(final OfflinePlayer player, final Callback<Backpack> cal
 				@Override
 				public void onResult(Backpack backpack)
 				{
-					if(backpack == null)
-					{
-						backpack = new Backpack(player);
-					}
+					backpacks.put(player, backpack);
+					callback.onResult(backpack);
+				}
+
+				@Override
+				public void onFail()
+				{
+					Backpack backpack = new Backpack(player);
 					backpacks.put(player, backpack);
 					callback.onResult(backpack);
 				}
@@ -149,12 +153,14 @@ public void asyncLoadBackpack(final OfflinePlayer player)
 				@Override
 				public void onResult(Backpack backpack)
 				{
-					if(backpack == null)
-					{
-						backpack = new Backpack(player);
-					}
 					backpacks.put(player, backpack);
 				}
+
+				@Override
+				public void onFail()
+				{
+					backpacks.put(player, new Backpack(player));
+				}
 			});
 		}
 	}
@@ -176,11 +182,21 @@ public void saveBackpack(Backpack backpack) {}
 
 	protected void loadBackpack(final OfflinePlayer player, final Callback<Backpack> callback)
 	{
-		callback.onResult(loadBackpack(player));
+		Backpack loadedBackpack = loadBackpack(player);
+		if(loadedBackpack == null)
+		{
+			callback.onFail();
+		}
+		else
+		{
+			callback.onResult(loadedBackpack);
+		}
 	}
 
 	public interface Callback<T>
 	{
 		void onResult(T done);
+
+		void onFail();
 	}
 }

src/at/pcgamingfreaks/MinePacks/Database/MySQL.java

@@ -215,7 +215,14 @@ public void run()
 						public void run()
 						{
 							ItemStack[] its = (data != null) ? itsSerializer.deserialize(data, version) : null;
-							callback.onResult((its != null) ? new Backpack(player, its, bpID) : null);
+							if(its != null)
+							{
+								callback.onResult(new Backpack(player, its, bpID));
+							}
+							else
+							{
+								callback.onFail();
+							}
 						}
 					});
 					rs.close();

src/at/pcgamingfreaks/MinePacks/Database/SQLite.java

@@ -60,6 +60,7 @@ protected void updateQuerysForDialect()
 		}
 		Query_DeleteOldBackpacks = "DELETE FROM `{TableBackpacks}` WHERE `{FieldBPLastUpdate}` < DATE('now', '-{VarMaxAge} days')";
 		Query_UpdateBP = Query_UpdateBP.replaceAll("\\{NOW\\}", "DATE('now')");
+		Query_UpdatePlayerAdd = Query_UpdatePlayerAdd.replaceAll("INSERT IGNORE INTO", "INSERT OR IGNORE INTO");
 	}
 
 	@Override

src/at/pcgamingfreaks/MinePacks/EventListener.java

@@ -69,6 +69,12 @@ public void onResult(Backpack backpack)
 					}
 					backpack.save(); // We have to save it now!
 				}
+
+				@Override
+				public void onFail()
+				{
+
+				}
 			});
 		}
 	}

src/at/pcgamingfreaks/MinePacks/MinePacks.java

@@ -99,6 +99,12 @@ public void onResult(Backpack backpack)
 			{
 				openBackpack(opener, backpack, editable);
 			}
+
+			@Override
+			public void onFail()
+			{
+
+			}
 		});
 	}
 	

src/at/pcgamingfreaks/MinePacks/OnCommand.java

@@ -136,6 +136,12 @@ public void onResult(Backpack backpack)
 									player.sendMessage(plugin.Message_InvalidBackpack);
 								}
 							}
+
+							@Override
+							public void onFail()
+							{
+								player.sendMessage(plugin.Message_InvalidBackpack);
+							}
 						});
 					}
 					else