Uploading files/images & receiving a link - issue

Hi, 
I've uploaded lots of images, pdfs etc. in the past through the 'design studio' tab, and marketo has created a link for that file which I can then embed in marketo emails. These links have always opened the file on an internet tab without a problem, but now it seems the links don't work. Instead of taking me directly to the file, they open up a general google page. When I copy paste the links into the search bar, it brings up a blank page instead of the file, like it used to. This is happening to all newly uploaded files as well as past files that used to work. Any suggestions?