Ошибка при установке плагина

[krysstallka]

Error: Class '\UIX\Setup' not found in src/XF/AddOn/AddOn.php at line 442

1. XF\AddOn\AddOn->checkRequirements() in src/XF/Admin/Controller/AddOn.php at line 779
2. XF\Admin\Controller\AddOn->getAddOnWarningsAndErrors() in src/XF/Admin/Controller/AddOn.php at line 373
3. XF\Admin\Controller\AddOn->actionInstall() in src/XF/Mvc/Dispatcher.php at line 350
4. XF\Mvc\Dispatcher->dispatchClass() in src/XF/Mvc/Dispatcher.php at line 257
5. XF\Mvc\Dispatcher->dispatchFromMatch() in src/XF/Mvc/Dispatcher.php at line 113
6. XF\Mvc\Dispatcher->dispatchLoop() in src/XF/Mvc/Dispatcher.php at line 55
7. XF\Mvc\Dispatcher->run() in src/XF/App.php at line 2326
8. XF\App->run() in src/XF.php at line 488
9. XF::runApp() in admin.php at line 13
   в прочем сама ошибка

 

[Atikin]

Вопрос туда, где скачали.