Thanks, visual composer is now working again.
However, it seems to have introduced a bug into the system. Now any time a column was specified greater than one it has just treated it as if it is just one column.
As you can see on one of the default pages:
“Something about me” and “My philosophy” are supposed to be in a column on the right, but now they just appear as if they are in one column.
This has happened throughout the theme on every page regardless of whether it has been edited or not.