Is Adobe's Creative Suite CS4 compatible with Sierra?
As a retired person, I cannot afford the new Creative Suite. Is the older version CS4 compatible with the new Mac OS Sierra?
PowerMac
yes and no. offically no, [Apple] edit ADOBE dropped support for CS4,5 and 6. Depending on how much you use of it and your workflow maybe it will work, maybe most of it will work, possibly none of it will work and in that event dot expect Apple or Adobe to feel compelled to fix it.
backup your system now if it does work in the event your update experience is less than what you hoped
Use Time Machine to back up or restore your Mac - Apple Support
you will need the Java 2015 from Apple
https://support.apple.com/en-us/HT201262
you should consider a clean install of the OS then a clean install of CS4 then an update from PS CS4 which will give you the cleanest possible environment which to test the software.
other sites may claim it works, those sites do not have guides in which testing is administered or require volunteers to even own the software or use the OS so proceed as you see fit if you "read it on the internet that it works!", I have supported it for dozens of macs for some time, my findings are not in agreement with many of those assessments due to the fact a workflow pipeline can be very different between users.
