No, i created the page thru the WordPress interface (Add Page). but that is very odd.
Ahh in fact (i probably should have tried this sooner) if i change my theme back to the default one (Kubrick?) i get a 404 error. Any ideas?
EDIT: Still having a play around. Seems that the page isn’t located at /portfolio/cv but is at /cv/. is this a problem with my permalinks? they are currently set up for /%pagename%. Should this be something like /%pagename%/%pagename%?
EDIT: Ok, think i may have fixed it now. Seems that i needed to set my permalink structure to /%pagename%/%pagename%. Do i need to do this for as deep as i want child pages in this kind of setup?