We are aware of a fairly major issue with Google Chrome since 10th Jan 2013, it is due to an update that Google implemented which conflicts with some coding that we are using when displaying the "new appointment window" We are working as fast as possible to resolve this issue but in the mean time we suggest you temporarily use another browser (EG FireFox, Safari, or if necessary Internet Explorer v8 and above)

We are working on a new release, which is due to be ready for this weekend (26th Jan), but we are trying to bring it forward if at all possible