It seems that Catalina quarantines the software, so even installing older versions gives the same error.
I got around it eventually by this method:
https://apple.stackexchange.com/questio ... licious-so
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- Sat Nov 16, 2019 1:02 pm
- Forum: New
- Topic: Latest update will not run on macOS Catalina
- Replies: 13
- Views: 869
I can confirm that this version still doesn't work in Catalina (10.15.1) for me. I still get the same error:
"“XnViewMP.app” can’t be opened because Apple cannot check it for malicious software."