Blank screen BO and FO

[vwzombie]

Hi

I am using prestashop 1.5.4.1 - the site has suddenly crashed with a blank page showing for both front and back office. The error is

Fatal error: Call to a member function getRow() on a non-object in /home/*******/*****/classes/ObjectModel.php on line 212

Previously there was another error like this but it referred to /classes/db/DbPDO.php

Could anyone shed some light on this please?

Some products had been added the day before and AttributeWizardPro was installed but not configured - could the problem be to do with either of these actions?

I would appreciate any advice on this at all

Thanks

[NemoPS]

Hi, can you perhaps screen the whole error page with all error blocks expanded? Something must be calling a non-valid database instance