That’s probably a byproduct of the editor work @hengiesel’s been doing, and hopefully we’ll have better compatibility or a migration guide once we reach alpha/beta builds.
Thanks, fixed in dev.
The Mac builds were completely broken by a fix I applied for Windows just before releasing.
I’ve just uploaded new builds for Mac to the same place - please let me know if they don’t fix the issue. They should hopefully address .ankiaddon file icon changed too.