Blank Page on Contact Edit

Hi,

I have SugarCRM deployed which works fine except the edit function. When I edit a contact and hit the save button all I see is a blank page. After going back to the home page manually and click on the contact again to edit it, it shows the contact has been updated.

The logs says:

Exception in Controller: SQLSTATE[28000] [1045] Access denied for user 'database_product'@'*****' (using password: YES).

Note: I have recently changed the DB password which was also updated in the config.php file.

Thanks in advance for your help!