Currently Being ModeratedFeb 9, 2013 6:10 AM (in response to Ozjulie)
To correct permissions in the iPhoto Library
Back Up and try rebuild the library: hold down the command and option (or alt) keys while launching iPhoto. Use the resulting dialogue to rebuild. Note the option to check and repair Library permissions.
Currently Being ModeratedFeb 9, 2013 9:00 PM (in response to Terence Devlin)
Thanks for all the suggestions.
As it happens I ended up shutting down then restarting the computer.
Voila everything worked again.