Just use g_configs.unload(config) to unload config files.

Avoids concurrent modification errors.

modules/corelib/table.lua

@@ -157,6 +157,7 @@ function table.tostring(t)
   local maxn = #t
   local str = ""
   for k,v in pairs(t) do
+    v = tostring(v)
     if k == maxn and k ~= 1 then
       str = str .. " and " .. v
     elseif maxn > 1 and k ~= 1 then

modules/game_interface/gameinterface.lua

@@ -783,8 +783,10 @@ function setupViewMode(mode)
     gameRootPanel:fill('parent')
     gameLeftPanel:setImageColor('alpha')
     gameRightPanel:setImageColor('alpha')
-    gameLeftPanel:setMarginTop(modules.client_topmenu.getTopMenu():getHeight() - gameLeftPanel:getPaddingTop())
-    gameRightPanel:setMarginTop(modules.client_topmenu.getTopMenu():getHeight() - gameRightPanel:getPaddingTop())
+    gameLeftPanel:setMarginTop(modules.client_topmenu.getTopMenu()
+      :getHeight() - gameLeftPanel:getPaddingTop())
+    gameRightPanel:setMarginTop(modules.client_topmenu.getTopMenu()
+      :getHeight() - gameRightPanel:getPaddingTop())
     gameLeftPanel:setOn(true)
     gameLeftPanel:setVisible(true)
     gameRightPanel:setOn(true)

src/framework/core/config.cpp

@@ -55,7 +55,6 @@ bool Config::unload()
     if(isLoaded()) {
         m_confsDoc = nullptr;
         m_fileName = "";
-        g_configs.remove(this);
         return true;
     }
     return false;

src/framework/core/configmanager.cpp

@@ -117,6 +117,7 @@ bool ConfigManager::unload(const std::string& file)
     ConfigPtr config = get(file);
     if(config) {
         config->unload();
+        remove(config);
         config = nullptr;
         return true;
     }

src/framework/luafunctions.cpp

@@ -197,7 +197,6 @@ void Application::registerLuaFunctions()
     // Config
     g_lua.registerClass<Config>();
     g_lua.bindClassMemberFunction<Config>("save", &Config::save);
-    g_lua.bindClassMemberFunction<Config>("unload", &Config::unload);
     g_lua.bindClassMemberFunction<Config>("setValue", &Config::setValue);
     g_lua.bindClassMemberFunction<Config>("setList", &Config::setList);
     g_lua.bindClassMemberFunction<Config>("getValue", &Config::getValue);