Thanks Cameron, i have mailed the event log to support. There didnt appear to be anything in there relating to the errors i was getting even thought there were some other nintex errors in there that i would appreciate your advice on. I have attached a screenshot of the errors im getting along with the event log to help with the analysis.
Late yesterday i discovered a way in which to change the datetime format of our central admin from us to uk and that seemed to remove some of the errors i was getting but i am still unable to run a report. the mail to support explains it all but if you need further info then let me know