GCP Data Entry not Allowing Lat and Long

Dear Sirs,


I am trying to enter some GCPs to evaluate your software and for some reason, the GCP will only allow me to enter an X and Y and not enter a Lat or Long. If you look at your various support pages, it allows Lat and Long to be entered and is labelled accordingly. This is proving to be quite a challenge. I assume therefore when I go to process, this is why the error "GCP and image geolocation do not lie in the same area...." comes up. Any help would be greatly appreciated.


I have now selected WGS84 mercator and it allows me to enter a Lat and Long but before processing I am still getting the same error message.