[Chimera-users] Error installing

Elaine Meng meng at cgl.ucsf.edu
Fri Aug 28 11:50:01 PDT 2020

Hi Dave,
This is caused by security changes in Catalina.  The workaround (also shown in red text on the download page) is:

To start Chimera on 10.15 (Catalina) or later, you need to right-click (or alt-click) on the app icon and choose "Open" from the popup menu. This is only necessary the first time you use it. Thereafter it can be started normally.

I hope this helps,
Elaine C. Meng, Ph.D.                       
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco

> On Aug 28, 2020, at 11:28 AM, David Butler <dbutler at FL63inc.com> wrote:
> Hi 
> I get the error attached when trying to install the stable version of the software.
> My OS is Catalina 10.15.6
> Thanks
> Dave

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