Not sure about the Yosemite version because "About this mac" option doesn't work too. Terminal, X11, Screenshot to name a few, don't work.
Used to work fine since I updated from Lion a few months ago.
This message shows up in "console" when I try to open one of those options:
23/1/18 21:36:52,032 com.apple.xpc.launchd: (com.apple.Terminal.11392) Service exited with abnormal code: 1
I found this answer from 2014:
You installed another version of bash,right? The default login shell is /bin/bash. you can change it following these steps,
go to "System Preferences" > "Users & Groups" click the "padlock" icon and authenticate right-click the icon for your user and select "Advanced Options..." change the value for "Login shell"
My default login shell is "/bin/bash" so I assume that this user didn't had the same problem after update to Yosemite.
At this point I'm completely lost with my poor knowledge on IT...
Thanks in advance!