Well I updated everything. So far so good, I just opened a project and the compressor was working on the master bus straight off the bat, however to be fair it did work occasionally anyway so this is inconclusive. First time I opened the project Sonar crashed though, I had to open it again.
I've also had trouble with some Reaktor synths that don't seem to save some of their settings with the project. For instance I have a groove box on this project in which I've tweaked a preset. One of the tweaks was moving the global time unit from 1/16 notes to 1/32, and I still have to go in and set that every time I open the project. Really annoying.