Adobe has not said CS6 is compatible with 10.11.
you can try resetting the application preferences by opening the application from the actual icon in your Applications folder
Holding down SHIFT+CTRL+OPT+CMD while selecting it.
, this will not work with the dock icon or a shortcut)
If this does not change the behavior you can create a new account, boot into that account and see if it works.
CS6 is 3 versions back and there may not be further support at this time and you might try the Adobe forums (where I was just run in circles for the past 8 days before I figured it out on my own)
MS has addressed a single issue in Office 2011 that caused Outlook to hang when syncing. They have not announced they with release further patches. 2016 is the current mac version of Office, there are reported issues with that as well but 2011 is 2 versions behind and there may not be further support at this time.
http://www.officeformachelp.com/
If you have a time machine backup you can restore to an earlier instance of your OS where your software was better behaved, otherwise to downgrade you would need to wipe the drive and reinstall the OS if it's is available to you then restore the data from a backup.