Not really: Adobe halted development and support officially over two years ago in May 2013. With the new version of OsX they also stopped selling it online and to anyone who runs Apple's latest operating system.
The system requirements for FW CS6 state compatibility up to the previous version of OsX. That is the unfortunate truth.
Adobe... grrr. They killed Fireworks, yet I STILL use it on a daily basis. Best thing to do is figure out how to move on (not that I have yet). Best alternative I've found is Affinity Designer, first program that's given me hope. Affinity Photo is great, and they are working on an alternative to InDesign.
Adobe? I don't recommend them, but they do have a corner on things at this point.
Yeah, I use it daily as well as the workflow is faster than PhotoShop. Hopefully Adobe can fix it until they come up with a replacement, otherwise, I too might have to go to something like Affinity Designer.
It's a sad day, but after reading your reply, I came to the conclusion that I have to move on from Fireworks. Because I just don't see Adobe doing squat to help with Fireworks. I think they want it utterly dead because it was superior in many ways to their home-grown offering (Illustrator). So today I opened up Affinity Designer and now it's full steam ahead. It really has some great features, so I'm going to choose glass half full.
The hardest part will be dealing with all of the archives of Fireworks files (years of them). Any design in Fireworks that I need to use in the future, I'll need to re-create in Affinity Designer. But in time it'll all be fine as I'll have slowly but surely moved everything over.
So with Affinity Designer, Affinity Photo, Affinity Publisher (once it's released), Final Cut Pro X, and Capture One (replaced Aperture when Apple killed it, and I don't like Lightroom), I'll be fine... for a fraction of the cost.
Until Serif sells out to Adobe, then I'll be back to square one, LOL
Okay, so I went all-in with Affinity Designer, and decided to figure out if my Fireworks files could be opened effectively in Affinity Designer. I saved as a psd file, and it preserved things extremely well thus far. Haven't done a ton of experimenting, but hopefully that will help with some of your files if you need to move on from Fireworks.
Try Affinity Designer. Might need to create a partition on your Mac and install Yosemite, then install Fireworks CS6 on that to retrieve your work. Or just work in that partition when doing Fireworks stuff.