first of all great theme! Second thing - I am newbie so please forgive me if I ask stupid questions.
To the matter:
I have WP 4.6.1 installed.
After installing Shapely following your instructions I hit enable button and from that point I see blank (white) page.
I cannot access my wordpress menu anymore to change theme. Only solution that works is to login to server by ftp and remove the theme.
Do you know waht is the reason for it and how to fix it?