Upgrade "Not Possible"

I can no longer see what I am aiming for or trying to reach to upgrade anything as the area is blank.
I just have to blindly click and pray I don't loose too much when it says an upgrade is possible.
Not sure if this is isolated but I had a quick look and found no one else with this problem.
It has only been this way since the last upgrade/maintenance break when the economy calculator was added.
Any help , answers or advice would be great , Ta

Hello BigFatBogan

Have you tried updating your flash player?

Please delete your cookies and cache and try playing on a different browser (IE, FireFox or Chrome).

If the problem still persists, contact support right here.

They will help you out.

Hope this helps a little.

Regards

BB_Dantesama

Cheers but unfortunately yeah I have.
I even downloaded Chrome and FireFox just to test the theory.
Mines with hammer upgrades attached are the only thing I can see , any other up grade I am blind too. :(