Doesn’t Work at All on Yosemite which is more than the required 10.6

Doesn’t Work as ALL!!!!!!!
Yep, it just doesn’t work on Yosemite.
It opened once, and I chose not to let it access my calendar because I hadn’t been using it and there wasn’t anything for it to download from it. Maybe that was the mistake?
It crashed! And I haven’t been able to get it to open since, it just says it has quit unexpectedl
If I click REOPEN, if just crashes again and gives me the same error message.
I find it interesting that both this app and the OPUS ONE LITE seem to be from the same company but the websites are different, and I can’t find any comparison between the apps.
I just downloaded the OPUS ONE LITE and it seems like it might work, but to delete an event you have to click just right on the event, because if you click a certain way you can right click to delete it but if you click on it a different way (and they both look the same way to me) you have a different set of options and delete is not one of them.
Anyway, since this app doesn’t work it seems for anyone, I’m going to try the other one. I like the look of both apps.

Color Works about Opus Domini Lite, v2.4.7