uploading img with shopp plugin corrupt

whenever I want to upload a img to a new/existing product on the shopp plugin the picture is “broken”
It’s not really broken but i have identified the problem:

<img src="http://kappershandelpromise.nl/alle-producten/images/1980/300.jpg?96,96,0,100,100,16777215,1779038081" alt="original" width="96" height="23">

"http://kappershandelpromise.nl/alle-producten/images/1980/300.jpg?96,96,0,100,100,16777215,1779038081"
the upper link ^ has some extra random numbers (?96,96,0,100,100,16777215,1779038081) in there which shoulden’t be there

"http://kappershandelpromise.nl/alle-producten/images/1980/300.jpg"
this link up here ^ works like a charm without the numbers/parameters.
How do I get rid of these “random” parameters or maybe could explain why they are there or what they do.

Thanks in Adv,
HurriCane