New Absolute Flat Fee - don't see "Start Another Flat Fee" button

I am running Timeslips 2015 and am having a problem with the Absolute Flat Fee. I need to change the flat fee amount. When I try to do that, it tells me I have already printed a bill using this arrangement. First, this is strange because I have not - I even checked my AR list to make sure. I did switch back and forth between trying flat fee and slips, but never approved any bills. Anyway, so then when I try to change the amount I get the message saying I have already printed a bill using this arrangement and I can click Amount Calculator or Start Another Flat Fee. I don't see either of those buttons. I know I've used Start Another Flat Fee several times in the past, and am pretty sure it's just in the same window titled "Absolute Flat Fees - Fees" with the Amount, Duration and Bill Arrangement Message. Where is the darn button? Does anyone have a screenshot for me, and more importantly - a reason it might have disappeared?

I'm wondering if this is related - I'm pretty sure there used to be a tool bar in the Client List window that isn't there anymore! It included the plus symbol for add a new client. Right now I have no tool bar, just the tabs. What happened?!

Thanks so much for any advice!!!