GRAPHISOFT is maintaining compatibility for ARCHICAD 17 and 18 and connected products (BIMcloud, BIMx, BIM Server, BIM Server Manager) on OS X 10.10 Yosemite. Based on GRAPHISOFT's first tests ARCHICAD 17 and 18 generally work well on 10.10 with some issues that are detailed in this article. BIMx desktop users should note, that BIMx cannot be run until the first compatibility update for ARCHICAD. The compatibility update for ARCHICAD 18 has been released.
ARCHICAD 13-16 version can run on Yosemite, though these were designed to work well with older versions of the operating system. As a result there is no technical support for operating system specific problems, like the ones explained in this article.
ARCHICAD 22 can not be installed or run on OS X 10.10 due to technical limitations. ARCHICAD 12 and older versions cannot run on OS X 10.10 due to technical limitations. (The ARCHICAD 10 file converter package has been updated to work well with OS X 10.9+)
Mounted volumes can disappear from the left panel of the ARCHICAD file dialog (e.g. open file dialog, add library dialog, hotlink dialog). The problem crops up when the file dialog is brought up again after browsing into a folder of the mounted drive. The roots of this issue lie within the changes Apple made in the mounted volume handling for OS X Yosemite and it is not specific to ARCHICAD.
The mounted drive is still accessible via the Devices section. (Devices section can be turned on in Finder Preferences by ticking the checkbox next to the local drive.)