I'm working almost 2 days with Mac OS X 10.7 Lion and Photoshop (also Illustrator, Indesign, Acrobat, Distiller) CS4 with no problem at all - hope it will remain so. – Except the droplets of course. 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.
Adobe Creative Suite 3 Known Issues with Mac OS X 10.6 (Snow Leopard)
The enhanced security features present in Mac OS X 10.6 prevent Adobe's PDF Printer from functioning as it did in previous versions (TechNote cpsid_50981).
'Crash or program error occurs when using Menlo font in Photoshop and Premiere CS3 and CS4 (Mac OS X 10.6)' (TechNote cpsid_51220).
Other issues noted with Photoshop-related products and Snow Leopard can be found in 'Photoshop related product known issues with Mac OS X 10.6' (TechNote cpsid_51229).
'Videos do not play correctly in Bridge CS3 or CS4 Preview pane with QuickTime 7.6 or X' (TechNote cpsid_51255).
'Crash or program error occurs when using Menlo font in Photoshop and Premiere Pro CS3 and CS4 (Mac OS X 10.6)' (TechNote cpsid_51220).
Launching Adobe products on Mac OS X 10.6 results in error 'Licensing for this product has stopped working' (TechNote cpsid_51260).
Adobe Photoshop Cs4 Pc
'Firefox 3.x crashes when trying to use the Adobe Downloader on Mac OS X 10.6' (TechNote cpsid_51147).
'When opening and saving files, applications, including Adobe applications, may sporadically crash' (Mac OS X 10.6) (TechNote cpsid_50654).
'Files do not open in original authoring application (Mac OS X 10.6)' (TechNote cpsid_51110).
Adobe Cs6 For Mac Download
Other CS3 Applications have had no major issues in Mac OS X 10.6. Additional issues will be added to this page as they are identified.