One bug I am running into - at least I think it is a bug - is the "Tweak It" feature on Theme It tab. When I try to enter number and hit tweak it, I get this error:
At line 1832 of file "Macintosh HD:Users:username:Library:Application Support:Adobe:Dreamweaver CS5:en_US:Configuration:Commands:wa_managetheme.js":
moveable[i].nerColor has no properties"
Now, I have not tried a restart to see if that fixes it yet as I just started testing out the functionality of that feature. I will report any other findings or if there is something I can do that fixes it.