There was a recent update on adobe air for mac which is causing issues with users of studio pro mac not to be able to drag resources on the timeline. There are two temporary solutions until mac developers solve the issue. You could uninstall update and reinstall old version for now till or you could you web version of software.
Uninstalling Adobe AIR on a Mac computer 1. Double-click the “Adobe AIR Uninstaller”, which is located in the /Applications/Utilities folder. After uninstalling install this version http://download.macromedia.com/air/mac/download/25.0/AdobeAIR.dmg,
Or you could use the web version by clicking on the red “Manage Sign” button located on our homepage at http://funeralscreen.com.
Pressing lowercase e brings up emoji window