Hello!
Installed and cannot use:
at the page /administrator/index.php?option=com_jsn
I see
Error 404
Call stack	
#		Function		Location	
1		JApplicationCms->execute()		/********/administrator/index.php:51	
2		JApplicationAdministrator->doExecute()		/********/libraries/cms/application/cms.php:261	
3		JApplicationAdministrator->dispatch()		/********/libraries/cms/application/administrator.php:152	
4		JComponentHelper::renderComponent()		/********/libraries/cms/application/administrator.php:98            
             
	    	