opening dreamweaver CS5.5 for the first time since installing new operating system OSX Yosemite. Says I need Java SE 6 runtime. went to intall and installed latest version of java, i believe SE 8. Do I have to install SE 6 also to get Dreamweaver to open? HELP PLEASE!
Yes, older versions of DW require Java SE 6 to be installed. Installing a newer version doesn't help, you need to also have 6 or DW won't run.
Yosemite has been a pretty popular topic here with old versions not working correctly. I'm not sure if CS5.5 will run in it at all, it's a bit old for such a new OS.
I'm sure someone else will have better info on that (I stopped using Macs a couple years ago).