I can't get the link to work either... well, the link does but the PDF won't display properly.
Anyway, I didn't mean to give the idea I was some kind of expert on this - I was just remembering somthing I read somwhere - probably on Pprune. Can't find it any more though, so perhaps I imagined it.
Can't see what the problem would be taking photos for your own use as AerBabe suggests. Perhaps the problem was one of selling the photos for a profit - would that mean the flight constituted airwork? Bit of a grey area, if, say, the photographer was a friend who didn't pay you for the flight, but then made money from it himself.
I guess the link above would explain all if it worked. Newswatcher, what did it say?