Thank you wq9nsc! That was exactly my problem opening and crashing. DPP4 would open for a few seconds highlighting a particular sub folder, then shut down. Prior to that it was working normally. I even removed DPP4 via control panel, downloaded and installed a new version, and DPP4 still opened briefly, somehow highlighting the same sub folder, before shutting down. All I had to do was change the name of the sub folder and it has resumed opening normally. PC is a Dell Inspiron 3668 64-bit running Windows 10 (won't upgrade to Windows 11).
