Well it does seem that 2013 is working with the macros, as you suggested Macropod.

what I cannot understand is that how the fonts on everyones PC are getting corrupted, however we have had 2013 running for a number of weeks now without any corruptions.

We have decided to upgrade the heavy print users to Office 2013 and the rest of the company stay on office 2010, if they get a corruption on the fonts or should I say an error then they have to come out of the document and go back in, then it usually prints. Not ideal but because we cannot tie it down its all we have got to go with until we upgrade the rest of the staff to office 2013.