Digital Imaging


If you are having trouble with your computer or Photoshop crashing or with scratch disk errors, here are some things you can do to troubleshoot. Of course, if you do have trouble that interferes with your weekly work, please contact your instructor and make arrangements.

Things to try:

  1. Remove temporary files on your computer:
    1. Windows:  The folder of temporary files goes by the name ~PST####.tmp  on Windows and Temp#### on Mac. The #### here refers to a series of numbers. The temp folder is located in C:/ > Users > “YourUser‘ >  AppData  > Local > Temp. Delete these files. See also:
    2. Mac: In the Finder Menu, under GO choose “Go to Folder’ then   in the Go To Folder dialog box enter: ~/Library/Caches. Remove these files. See also:
  2. Make sure your  Photoshop  CC is up to date  with latest version installed. See:
  3. Close down other programs while you use the software.  
  4. Make space on your computer  if you are running low on space (PS requires a lot of RAM to run)
  5. Try starting  Photoshop  with settings reset:  Press and hold Alt+Control+Shift (Windows) or Option+Command+Shift (Mac OS) as you start  Photoshop. You are prompted to delete the current settings.
  6. Once you have  Photoshop  open, before you open an image, Open PS Preferences and make some changes.
    Read this article and adjust your settings in the Preference pane especially. It also offers some other tips but mostly the Preference pane:  – *do not flatten layers during your process as this article mentions – those are needed for this  class, otherwise, all tips are good.
  7. Note: Once you have a file open, decrease the file size but don’t make it too small! No smaller than 1000 x 1000 at 72  dpi  for this class, otherwise the quality gets too low.  

Try these steps first and if you are still having trouble, there are some options for getting more help – you can make an appointment with me and we can do some deep troubleshooting (I will mostly walk you through the steps above though), you can contact Brant at UAF  eCampus  (call the front desk, contact info at foot of page here:, or you can contact or go by OIT (