diff --git a/res/layouts/pages/content.xml.lua b/res/layouts/pages/content.xml.lua
index c682182b..d7480e23 100644
--- a/res/layouts/pages/content.xml.lua
+++ b/res/layouts/pages/content.xml.lua
@@ -6,8 +6,9 @@ add_packs = {}
 rem_packs = {}
 
 function apply()
-    core.reconfig_packs(add_packs, rem_packs)
-    menu:back()
+    if not core.reconfig_packs(add_packs, rem_packs) then
+        menu:back()
+    end
 end
 
 function refresh_changes()
diff --git a/src/data/dynamic.cpp b/src/data/dynamic.cpp
index 582f15e4..720c5b8b 100644
--- a/src/data/dynamic.cpp
+++ b/src/data/dynamic.cpp
@@ -335,6 +335,10 @@ Map& Map::put(std::string key, std::unique_ptr<Value> value) {
     return *this;
 }
 
+void Map::remove(const std::string& key) {
+    values.erase(key);
+}
+
 List& Map::putList(std::string key) {
     List* arr = new List();
     put(key, arr);
diff --git a/src/data/dynamic.h b/src/data/dynamic.h
index a47cd54f..6abf9f4c 100644
--- a/src/data/dynamic.h
+++ b/src/data/dynamic.h
@@ -118,6 +118,8 @@ namespace dynamic {
         Map& put(std::string key, bool value);
         Map& put(std::string key, std::unique_ptr<Value> value);
 
+        void remove(const std::string& key);
+
         List& putList(std::string key);
         Map& putMap(std::string key);
 
diff --git a/src/items/Inventory.cpp b/src/items/Inventory.cpp
index 1e682e11..b3dd5f2b 100644
--- a/src/items/Inventory.cpp
+++ b/src/items/Inventory.cpp
@@ -88,7 +88,11 @@ void Inventory::convert(dynamic::Map* data, const ContentLUT* lut) {
     for (size_t i = 0; i < slotsarr->size(); i++) {
         auto item = slotsarr->map(i);
         itemid_t id = item->getInt("id", ITEM_EMPTY);
-        item->put("id", lut->getItemId(id));
+        itemid_t replacement = lut->getItemId(id);
+        item->put("id", replacement);
+        if (replacement == 0 && item->has("count")) {
+            item->remove("count");
+        }
     }
 }
 
diff --git a/src/logic/scripting/lua/libcore.cpp b/src/logic/scripting/lua/libcore.cpp
index 178b50f4..a83c3679 100644
--- a/src/logic/scripting/lua/libcore.cpp
+++ b/src/logic/scripting/lua/libcore.cpp
@@ -91,7 +91,8 @@ static int l_reconfig_packs(lua_State* L) {
     }
     auto controller = scripting::engine->getController();
     controller->reconfigPacks(scripting::controller, addPacks, remPacks);
-    return 0;
+    lua_pushboolean(L, scripting::controller != nullptr);
+    return 1;
 }
 
 static int l_get_bindings(lua_State* L) {