Fatal error on activation

Hello Mialex,

Did you checked for plugin conflicts? I am not getting any error.

A well written plugin should’ve checked if CMB_Meta_Box is already declared or not, because it is a common class used by many plugins.

So, yes, it is a plugin conflict ??

I bet it was checked ??

https://github.com/tareq1988/meetup/blob/master/meetup.php#L198