Can someone please tell me what I am doing wrong:-
I go to the "get fen" link and copy and paste into the box which comes up when I go to the insert fen link on the forum post but I always get invalid fen.
Pgn's work fine
I just did this with no problem. I cut and pasted the fen from one of my games and made sure there were no spaces at start and end of the fen info. between the bracket and the pasted text. In this case I did not use the link you mentioned, but just typed in the square brackets and the fen and /fen text.