What version did you download? The 1.15 version should not have this problem. If you downloaded an earlier version for whatever reason, you should be able to open it by following the procedure in this post: https://plato.cgl.ucsf.edu/pipermail/chimera-users/2020-February/016457.html

On Oct 24, 2021, at 1:02 PM, salar moniri via Chimera-users <chimera-users@cgl.ucsf.edu> wrote:

Hello there,
I have downloaded Chimera but i get an error saying “Chimera” can’t be opened because Apple cannot check it for malicious software. any idea how to fix this?

Thank you,
Salar
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