I've experienced the same thing on Windows 10 yesterday, but normally I do not work in P7 so I didn't investigate much.

On Fri, Oct 20, 2017 at 3:57 PM, Thomas Dupriez <thomas.dupriez@ens-paris-saclay.fr> wrote:
Hello,

I've had a few issues with Pharo 7 lately. After downloading pharo 7 images, doing some work in them and saving them, the images either instantly crashe or freeze when I try to re-run them.
If that helps, I was working with and on the calypso browser.

Attached are the crash dump files from some of these faulty images.

vm version: 201708271955
image version: 6521
OS: Ubuntu 16.04 LTS

Cheers,
Thomas