You need to look into what the program errors are look at the crash reports.
How do I see the crash reports?
The one the PS Error log is in?
On your Finder menu bar, Go > Go to Folder
Copy and paste: ~/Library/Preferences/Adobe Photoshop CS6 Settings
into the field and click on the Go button.
You should see it in there.
The only things in that folder are
Optimized Output Settings
Recently Used Optimizations.irs
I uninstalled CS6 a while back, so I thought the Error log would be there as in CC and CC 2014.
Maybe someone familiar with CS6 can say.
Again I don't want to throw out anything, so have a look at this step by step for some ideas: