RESOLVED: Strange issue by adding a ?r=www.mydomain.com

After uploading an image and processing it, although everything looks fine if i click on the image to go buy it i get an

Oops! That page can’t be found.

What i notice is the url generates a ” ?r=www.mydomain.com ”, if i manualy remove it it works fine.
can someone help??

if i right click and open the image (with chrome) it works fine. with mozil. no matter how i try i get the oops message