Cannot view the previous revision of a page

I have reviewed some of the call logs on this site, and I can see that I need to view the previous version of a page to be able to reset it, however, everytime I try to select a previous version it takes me to the create a new page screen.

The problem is that one of my pages seems to have become corrupted last night when I was trying to update it, and the browser session failed.

Can you look at the problem with this particular page?

Thanks in advance,

Scott Jackson