From memory:
Did you go to the published arc in normal search/browse, or did you go to it in the 'My Published Arcs' tab?
IIRC you don't get an edit button for your arcs if you look in th enormal search/browse window.
By my mohawk shall ye know me!
my toons
Funny: Ee-Ai-Ee-Ai-Oh! #3662 * The foul-mouthed Handyman! #1076 * City of Norms #132944
Serious: To Save A Single World (#83744) * Marketing Opportunity (#83747)
You beauty J-D. I was using search. Forgot all about the "My Published Stories" tab. cheers mate. 
Hey guys, i figured I'd share this little problem of mine, and see if anyone else has had it. I was working on an arc last night, and I published it. It needed toning down, so i went to the published arc to edit it, only to find no Edit button. No one had played it, and it hadn't been up for long, but I don't recall this issue on test. Anyone else have this problem?