there, I'm busy testing CoursePress. Will be buying Pro

Hi there,

I'm busy testing CoursePress. Will be buying Pro shortly.
Setting up and creating a course went without a hitch, but getting a weird error when doing the actual test.
This is not on all questions, but some of the checkbox questions throws this error...and you can not continue test:
Warning: in_array() expects parameter 2 to be array, string given in /home/tskllsh/public_html/wp-content/plugins/coursepress/includes/unit-modules/checkbox_input.php on line 130

Here's a screenshot: http://gyazo.com/6fdae87de0a321b687d698ee020130cd

My partners won't let me spend money on Pro version if they can't even test the free version.

Please assist URGENTLY
Thank you