I have used Elements 14 with no problem. I have installed Elements 2020 and upon launching the Organiser it crashes every time, about 10-20 seconds after launching. No user action is being taken other than simply opening the software. It is unusable. There seems to be no obvious way for me to fix this problem.
Bug, Crash or freeze, Organizer, Problem or error, Windows
What OS are you using? Did you convert your Elements 14 catalog upon installation of 2020?
If you are on Windows, does Task Manager show any high activity for the Organizer or for a process called ElementsAutoCreations 2020?
Are you getting any error messages when it crashes and/or does an Adobe Crash reporter dialog open?
One thing you can try is to turn off all media analysis. Go to Preferences (hit Ctrl+K as soon as the program opens) and uncheck all of the boxes under the Media Analysis tab.
Something else to try is to press the Shift key immediately upon launching the Organizer. This will bring up the Catalog Manager. Create a new empty catalog and see if the program crashes when you open it.