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Hi, I installed PDFX-Change Editor with POL on my Unbutu 20.04 derivative distro. It works great! One thing, though--I can't set it as the default PDF viewer... If I go Edit > Preferences > File Associations and set "As default application for PDF files" to "Make default", it flips back to "Do not change" when I click "Apply". And if I right click > Open with, PDFX-Change Editor doesn't appear as one of the options--not even in "Other Applications" (it doesn't show up anywhere in /usr/share/applications).

Any suggestions appreciated! Thanks. ;-)

Edited by joe_user