Before we released the new version of the software I tested on systems with Mavericks and Yosemite - I did not test on Mountain Lion. The only issue I encountered that caused some angst was the white font on the first line on the system running Yosemite.

If you are encountering difficulties with the new version of the software please check and see if you are on version 68 (1.0.0.068). You can check by clicking on the "Keying Tool" menu item at the top of your screen, then selecting "About Keying Tool".

We apologize for the difficulties some of you are encountering and ask that you send us a message, worldarchivesproject@ancestry dot com, regarding what issues you are experiencing.