Note: This is for the cpanel with RVSkin
After upcp on the cpanel, you may encounter that user that use the RVSkin theme in their cpanel unable to load the email account.
It may because the version of the RVSkin not sync with the cpanel. What you can do is reupdate the RVSkin as below
rm -f /usr/local/cpanel/Cpanel/rvversion