**EDIT** Hey, those buttons have been replaced by the bottom left most button in the toolbar, so now that i explained it hopefully nobody has to spend as much time as I have trying to figure it out. :-P
Running 2.5.031 in Illustrator CS4 on Snow Leopard seems to have cause my Scriptographer // and ** tool buttons to vanish. Well, they were never there in the first place, so I guess they just never showed up. Noticed on the blog post, someone else has experienced the same bug, are there any others out there?