yesterday  i downloaded shoppica theme. I install it in open cart 1.5.4 and when i go to Extensions > Modules click on edit of Shoppica 2 CP i ‘m getting this error

PHP Fatal error: ‘The class cannot be found: Theme_Admin_._PaymentImagesPlugin‘

in /var/www/opencart/tb_themes/shoppica2/library/ExtensionPluginBootstrap.php:152
Stack trace:
#0 tb_themes/shoppica2/library/ExtensionPluginBootstrap.php(104): TB_ExtensionPluginBootstrap->loadPlugins()
#1 tb_themes/shoppica2/admin/ThemeAdminExtension.php(26): TB_ExtensionPluginBootstrap->configureAll()
#2 [internal function]: Theme_Admin_Extension->configurePlugins(Object(sfEvent))
#3 tb_themes/shoppica2/library/vendor/sfEventDispatcher.php(79): call_user_func(Array, Object(sfEvent))
#4 tb_themes/shoppica2/library/AdminManager.php(35): sfEventDispatcher->notify(Object(sfEvent))
#5 tb_themes/shoppica2/library/AdminDispatcher.php(104): TB_AdminManager->initExtensions(Object(TB_DataBag))
#6 tb_themes/shoppica2/library/AdminDispatcher.php(34): TB_AdminDispatcher->initTbManager()
#7 admin/controller/module/shoppica2.php(30): TB_AdminDispatcher->__construct(Object(Registry), ‘shoppica2′)
#8 [internal function]: ControllerModuleShoppica2->index()
#9 system/engine/front.php(42): call_user_func_array(Array, Array)
#10 system/engine/front.php(29): Front->execute(Object(Action))
#11 admin/index.php(157): Front->dispatch(Object(Action), Object(Action))
#12 {main}

Let me know what can i do to solve this error. its very urgent