"Whoops! Page Not Found" shows when trying to view an advert
I have recently changed the "Ad categories" and the "Form layouts" plus their "Custom fields" to my site which was previously working with no problems but wanted to change the langauge of the categories and fields from English to another language.
Since doing this I can "Create a new ad" with no difficulty, the new advert shows up on the frontpage under the new advert section BUT when clicking to view the advert in details shows the old ""Whoops! Page Not Found" 404 error message?
Any ideas to what I've done wrong??