Please guide me because once I open a file in CS 5 version the application hanged.
Does this happen with every document or just one?
If the former try resetting your Photoshop Preferences:
Close and relaunch Photoshop, and IMMEDIATELY hold down Ctrl + Alt + Shift (Windows) or Cmd + Ctrl + Opt + Shift (Mac), and respond in the affirmative to the dialog asking if you really want to replace the preferences. you must be extremely fast on the keyboard (if you don’t see the confirmation prompt, you were too slow)
You may have to do it a couple of times before you get the hang of it!
it happens intermittently not for a specific condition.Request you to guide me to buy a support subscription.
This is a user-to-user forum.
I suggest you reset your Photoshop preferences as detailed above.