Dreamweaver Air Extension

Hi I have tried unsuccessfully to add the air extension .mxp file (by double clicking on the file in finder) to Dreamweaver CC on an imac running Mavericks - everytime DW crashes - I have unistalled and reinstalled Dreamweaver but thi sdoes not help. Any suggestions? I was hoping to use the air extension to creat an app that utilises sqlite.

Cheers

Dave