Part L 2013 Not Updating

Hi

I have the following problems with my Part L 2013 which I don't seem to be able to rectify.  Under Criterion 2 the Wall element is shown failing, it's Partition 8 (which is wrong in itself) - I've been through each room on screen and the paper printouts but can find no error.

Anyone got any ideas or is my program just corrupt ?

Cheers