I need som help with the Widget Browser

I need some help with the Widget Browser.

I can degign splendid Menu Bars with the Widget Browsers Menu Bar Designer Tool. All works well in Live View om my local computer, But after uploading the code to the server I get the following error:

SpryMenu.js requires SpryWidget.js

and

SryMenuBarKeyNavigationPlugin.jr reqquires SpryMenu.js.

I dont nuderstand this since both files are uploaded to the server...