Edited sentence: Annoyingly if you install GIMP again, File Associations of the debut installation will be back, and again you'll have to uninstall them one by one.GIMP has a famous trap, which users have contested, but with no success: If you install GIMP and happen to select File Associations in the initial Wizard, you will not be able to undo this unless you manually remove them file by file or you uninstall the program.There is a separate application which comes with the program to alter file associations, but this fails to work because file types are never again selectable