I think I may have found the problem
I think I may have found the problem although explaining may make me look a little stupid!!!! I have looked up my Apple account and at the software I have downloaded and beside iwork08 is the word trial version!! It was so long ago I had assumed I had bought it outright. Unlike Microsoft there is no popup when the time period runs out prompting you to purchase the full version so its a little confusing. I am although assuming that this issue is what happens when the trial version period runs out?