If you happen to attempt to change a Cpanel password from WHM and get the following error, it by be due to the Perl install on the server being incorrect or corrupted;
” The password for ‘aaccount’ could not be changed because: ”
Normally it will give you the reason why, however if the Perl install is bad, it will simpy say the message and nothing else.
To correct this, follow the link on how to install / update perl in CPanel – http://www.keithdmitchell.com/2009/01/updating-cpanel-to-perl-588/
