CMS Made Simple & HostGator - Can't upload files

I administer a CMS Made Simple site that runs on HostGator. I got a report from a user that they couldn’t upload any files. Strange! I checked it out, and neither could I (through the web interface). I could upload a file straight to the /uploads directory, but I couldn’t delete the file. It would complain about my actions being limited to the uploads folder… so it thought I wasn’t in it? Logged into HostGator’s cPanel and found that my root path had changed from /home to /home4 … no notice from HostGator about this, it just changed. Changed the config.php of the CMS Made Simple site to have /home4 wherever /home was before - all is working now.