Debian 8 clean install (problem with email notifications)

Hello,

After default installation - all work, but when I activated :

    "SendEmailNotifications": false,
    "RequireEmailVerification": false,

After reload of Mattermost - we see error "panic: runtime error: invalid memory address or nil pointer dereference"
I tried make changes from "web console" and direct in file config.json - we see error in both variants.

Maybe somebody know how to resolve situation?

P.S. Version : Current Stable Release 2.0.0
Thanks.