Adobe and Apple have worked closely together to test Adobe Creative Cloud applications for reliability, performance, and user experience when installed on Intel-based systems running Mac OS X Yosemite (version 10.10). The latest versions of all Adobe Creative Cloud products are compatible. In addition to the current Photoshop CC release (2014.2), the Photoshop team has also tested Photoshop CC 2014 (2014.2), Photoshop CC (14.2.1) and CS6 (13.0.6; 13.1.2) for compatibility.
As with any new release of an operating system, unexpected issues could arise that were not discovered during testing. If you encounter any issues, report them using the bug reporting form.
Apple has improved security by introducing their new "V2 code signing" (it is a way to guarantee that the application came from the developer and has not been altered, infected with a virus, or damaged in any way). While Adobe is signing future updates with V2, some applications that are signed with the older V1 code signing may issue a warning: "<Adobe application> can’t be opened because the identity of the developer cannot be confirmed." Learn more.
When using Mac OS X 10.10 with Safari 8, PDFs do not open using the Adobe Acrobat or Reader PDF browser plug-in. When opening a PDF in a browser, Safari's PDF Preview is the default PDF viewer. Explicitly set the Adobe plug-in as the default PDF viewer. Learn more.
In our testing, we found no other significant issues with running Creative Cloud products with Mac OS X Yosemite.
When using Lightroom with Mac OS X 10.10, the Map module loads slowly or partially on some low-bandwidth Internet connections or the following error appears: "Sorry, we have no imagery here." Learn more.
Adobe offers support to customers running Mac OS X Yosemite in accordance with Adobe's standard customer support policies. Visit the support page for additional information about complimentary and paid support programs.
Adobe recommends following your company’s internal guidelines to manage updates. You may want to contact the IT person who manages your Adobe licenses for information about your corporate policies on updating software. For volume licensing customers, IT admins should visit Creative Cloud Packager to learn how to package updates for silent deployment of Creative Cloud and CS6.