404 component not found error
I'm running Edugeek Joomla developing a school web site. I have set it to display the message site under development and that's been working ok. However, recently returning to it when I try to admin in it accepts my user name and password than brings up an empty white web screen.
Trying it without the /administrator it's bringing up a 404 error - component not found.
I can access the site ok with both Plesk and FTP. Any suggestions as to what's gone wrong please folks?