Sage: Unable to read contents in the Interface Builder file at path /Applications/Sage-6.8.app/Contents/Resources/English.lproj/MainMenu.nib due to error: The file “MainMenu.nib” couldn’t be opened because you don’t have permission to view it..
bash-3.2# ls -ld /Applications/Sage-6.8.app/Contents/Resources/English.lproj
drwxr-xr-x@ 6 installer admin 204 Sep 22 13:22 /Applications/Sage-6.8.app/Contents/Resources/English.lproj
bash-3.2# ls -l /Applications/Sage-6.8.app/Contents/Resources/English.lproj
total 16
-rw-r--r--@ 1 installer admin 410 Jul 28 16:45 Credits.html
-rw-r--r--@ 1 installer admin 92 Jul 28 16:45 InfoPlist.strings
drwx------@ 4 installer admin 136 Feb 14 2014 MainMenu.nib
drwx------@ 4 installer admin 136 Feb 14 2014 MyDocument.nib
Also had the same problem with 6.5 10.10 app.