Thumbnails hate my sketches!

It's the same error every time. If I have uploaded more than just the "Large Image" the "make thumbnail" button takes me to the main account page.
So all my new lovely cels I just finished catagorizing, that have sketches, have no thumbnails. T_T

I have found this too. Just log out then back in, go to manage then edit. Re-hit the make thumbnail button and it then works or least it did the last few times the thumbnail maker froze on me.

I love you.