This is a problem caused by a bug we have identified in DW CS6 on Mac OS, We will be releasing an update in the next couple of days to address the issue.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.