administration - Railo not showing "List of existing gateway instances on Railo" -

i working on railo site.i need add new gateway instance on railo web administrator.i filled form creating new gateway instance , when submitted not showing under "list of existing gateway instances".

i using railo-4.2.1.008 version.

can please me out here?

please check root directory , application.cfc try deleting application.cfc , create again.see if works.