MacOS 11 or Big Sur

[iPat1959 0]

I can not start my CURA software since upgrading to MacOS 11 or Big Sur Betakeep getting message "Ultimate Cura" can't be opened because Apple cannot check it for malicious software.  This software needs to be updated.  Contact the developer for more information.  So I am.  Please help?

[Smithy 1,145]

Have you tried to right click on the app, then choose open?

Maybe you have to do it twice but then it should work. After these steps you can start it normally.

[ahoeben 1,981]

It looks like this is caused by a dependency in Cura. For details (and a preliminary fix), see this github comment/thread:

https://github.com/Ultimaker/Cura/issues/7970#issuecomment-659791641