I tried browsing my computer for the default program to open .psd files, but when I double click photoshop cs6, it doesn't show up in the list of default programs. Please help, this is very annoying. Photoshop can open .psd files automatically in other user accounts, but not on mine.
Are Photoshop and OS fully updated and have you performed the usual trouble-shooting routines (trashing prefs by keeping command-alt-shift/ctrl-alt-shift pressed while starting Photoshop after making sure all customized presets like Actions, Patterns, Brushes etc. have been saved and making a note of the Preferences you’ve changed, 3rd party plug-ins deactivation, system maintenance, cleaning caches, font validation, etc.)?
In PS the default file settings are controlled in Bridge. There open edit/preferences/file type associations. Scroll down to .psd and see what default option is. If not CS6 then choose browse and navigage to folder with CS6.exe (one with PS icon in front) and select this file.