I have made a page called scheduled_maintenance and set it as my static homepage, however whenever I go to the home URL I get a 404 error…page not found. Site is http://9400shea.com
Go to your WordPress settings>Permalinks and change them to default. If things work okay, try switching it back once again.
If you are still having issues with the pretty permalinks then you can try the troubleshooting tips here: http://codex.wordpress.org/Using_Permalinks#Fixing_Permalink_Problems