Trial version_installation link

I just signed up for the trial version and after downloading the installation file I keep getting this message. Is there any solution for it?

Hi - I just downloaded that same file and it opened without problems here.
Have you tried to download it once more?
-wim

Hi! Thanks for the quick reaction. I tried several times and I get the same warning every time

Hi - do you have any anti-virus software installed?
Also, @iohanna, you could perhaps check the following page and see if those instructions help.
https://wiki.mcneel.com/rhino/mac/disk/image/could/not/be/opened/rhinoinstall
-wim

Hi Wim! It eventually worked. Thanks for helping!