@helen-keenan
I remember your name from an automatic report you sent to our ticket center yesterday and I just wanted to say that I could see from the report that you were using a very old version of Isadora 1 (which is no longer supported) on a computer running macOS 10.9.x (which is also no longer supported).
If you would like to upgrade to Isadora 3, it is cross-platform (Mac and Windows), fully 64-bit, offers a number of new, exciting features, can be used with the new Online License Portal for easy license management, and is supported on Windows 10 and macOS 10.11.x (El Capitan) to macOS 10.14.x (Mojave).
If you do not wish to upgrade to Isadora 3, we highly recommend that you at least update to the most recent version of Isadora 2, which can be found on the TroikaTronix legacy downloads page. Isadora 2 is runs on Windows 10 and macOS 10.10.x (Yosemite) to 10.13.x (High Sierra).
If you would like to keep your current version of Isadora intact but also download the most recent version of Isadora 2, you can install multiple versions of Isadora on your machine by following the steps laid out in this TroikaTronix article.
Best wishes,
Woland