Media Protection changing URL of non protected media items.

Hi,

I have set up membership 2 to protect media to create stock image library.

I have the media protect addon set with the following:

Basic protection (default)
Protect Individual Media files - on (I am using this to protect the selected stock images.)

Now I have a issue where normal images that I have inserted in to a page are getting 404, as I there seems to be string added to the URL, as an example:

In the page editor screen the html is :src="http://www.platoonpress.com/creativeplatoon/wp-content/uploads/sites/116/2015/07/DSC_1751_web_layout.jpg"

However on the front end the html appears as:

src="http://creativeplatoon.com/downloads/2015/07/DSC_1744_web_menu.jpg?bf2936"

How can I stop the membership plugin stop effecting the non protected media files?

Cheers,

Nick