While the ChimeraX 0.5 download may self identify as version 0.1, it is the 0.5 prerelease version. Fixing the version number was not a priority back then. And please don't run it, as it is there only for historical reference. The first version of ISOLDE is for ChimeraX 0.6. But, again, that is only for historical reference. Both ChimeraX and ISOLDE are so much better now, that I cringe when you say want to use those old versions. You really, really, really, really need to update your Mac to macOS 10.13 or newer. It's free to do and it is still getting security fixes from Apple through November 2020. (Everytime I reread this, I add another really, really.) HTH, Greg On 5/13/2020 1:07 PM, Christine Gee wrote:

Dear ChimeraX

I downloaded what was supposed to be chimeraX 0.5 from your site, and 0.1 instead. I have an older mac with an older OS (10.11.6) and would like the last version that was developed for it. Can you please let me know where I can download 0.5? Also does it work with isolde?

Regards Christine

Dr Christine Gee Research Specialist Kuriyan Lab HHMI/Molecular and Cell Biology/QB3 527 Stanley Hall MC 3220 University of California, Berkeley Berkeley, CA 94720-3220 Lab Phone: 510 643 0164 Cell: 510 230 7891 Email: christinelgee@berkeley.edu <mailto:christinelgee@berkeley.edu>

_______________________________________________ ChimeraX-users mailing list ChimeraX-users@cgl.ucsf.edu <mailto:ChimeraX-users@cgl.ucsf.edu> Manage subscription: https://www.rbvi.ucsf.edu/mailman/listinfo/chimerax-users <https://www.rbvi.ucsf.edu/mailman/listinfo/chimerax-users>