Error: Add Markbook Column

A problem I am coming across is that, in Chrome, when I try to add one markbook column for a class I receive the ‘Oh, Snap. Something Went Wrong’ error. Is this a problem or is it just my system.

trains5390, Chrome behaves a little differently than other browsers, which might give an HTTP error. The best bet is to check your PHP error logs to try and see exactly what error is given. Also, please make sure you are running PHP 5.5 or above. Thanks!