Hy Dirk and All,
YES !!!, Subsurface 4.7.8 work fine with MAC OS 10.10.5.
I installed it easilly on my Mac.
I have had a problem to import my dives send with SubsurfaceMobile on the Subsurface's cloud. Connection problem ("wrong password"). The reason was that my password with upper caps had been transformed with only lower case.
Logged, I have downloaded my dives from Cloud, and start to discover the Program. Really full of all a diver needs.
I'm really glad to find a really far far better program than Scubapro Logtrack.
Studying our datas is important for security.
I'll try to find how I can help for theses wonderfull Apps and programs.
Congratulation to the dev team and community.
Best from France, deep or not, dive as you like, in security.
Emmanuel