Errors appearing suddenly?

Hi All

http://www.wanakartsociety.co.nz

Just brought this site up and running a few days ago. It uses Atahualpa 3.3.3 as the theme.

The other major component I have running is Gallery2.5

Anway apart from sudden server errors which seem associated with PHP.in and not allowing the gallery to run as an embeded wordpress page the site was running fine.

I logged into it today and saw all these error messages – here is an example of what is in the header area

Notice: Undefined index: wpg2_sidebargridblocksimageframe in /var/www/vhosts/wanakartsociety.co.nz/httpdocs/wordpress28/wp-content/plugins/wpg2/wpg2functions.inc on line 556

Notice: Undefined variable: cssappendoutput in /var/www/vhosts/wanakartsociety.co.nz/httpdocs/wordpress28/wp-content/plugins/wpg2/wpg2functions.inc on line 559

Notice: Undefined variable: body_classes in /var/www/vhosts/wanakartsociety.co.nz/httpdocs/wordpress28/wp-content/themes/atahualpa333/functions/bfa_bodyclasses.php on line 23

Notice: Undefined index: bfa_body_class in /var/www/vhosts/wanakartsociety.co.nz/httpdocs/wordpress28/wp-content/themes/atahualpa333/functions/bfa_bodyclasses.php on line 59
id=”body-page-28″ class=”body-page body-post”>

All this wasn’t happening 14 hours ago!

Advice please – I can’t see what has changed/happened