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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.)?
Thread moved from PS Beginners forum to Photoshop General forum
Thanks for your help. I ended up uninstalling and reinstalling the entire program after it quit opening altogether, and that did the trick.