The issue with Yosemite is a Memory leak within Dreamweaver itself causing our extensions to crash, this is not something we have control over fixing.
We haven't gotten word from Adobe about a fix for the issue and can't make any commitments on their behalf. Unfortunately we only hope they are working on it and will resolve it, but have no control over their development goals.
An interim work around would be to use Bootcamp to crate a windows virtual machine, then install Dreamweaver i the windows virtual machine. Not perfect, granted, but will get you working in the mean time.