When editing, link code for pictures no longer shows up.

When I post pictures such as ones from photobucket, when I try to edit the link code won't show up again. It will show up for a brief second but then the picture shows up again.

It didn't work like this until just a few days ago. I must have clicked or changed something on my site. Before this when I would edit something the link code such as photobucket would show up.

Any idea what I did. Any help would be appreciated.

General>Messages and emails
Activate the WYSIWYG mod by default in the posts : Check it to No.
See if this helps.

Thanks so much but it is still doing the same thing after trying this. Any other ideas?