wpf - TypeOverload Exception in wp7 -

wpf - TypeOverload Exception in wp7 -

iam using awssdkwp7 library work on s3 storage of amazon. had written simple code in separate method , called in button_click event. while debugging iam getting next exception.

"typeloadexception unhandled" file or assembly name 'awswp7sdk, version=1.0.0.0, culture=neutral, publickeytoken=ada2d2c453e6043a', or 1 of dependencies, not found.

public void s3bucketslist() { seek { //list<string> bucketslist = new list<string>(); amazons3client amazonclient = new amazons3client(); amazonclient.listbuckets(); } catch(exception ex) { } } private void button1_click(object sender, routedeventargs e) { s3bucketslist(); }

can tel me went wrong?

thanks in advance

wpf windows-phone-7