ASPxFileManager is not working. Script errors occur-Collection of common programming errors

ihave a dev ex file manager control in my aspx page . I have set the image folder to the control but the file manager control is disabled. below is my aspx code file.

The control is showing along with the folder but on clicking the folder no images are showing

Is throwing three errors in javascript

1- Uncaught TypeError: Object [object Object] has no method ‘SetStyles’

2-Uncaught TypeError: Cannot call method ‘OnFolderClick’ of undefined DXR.axd?r=1_109-Qcan7:2074

3- Uncaught TypeError: Cannot call method ‘OnToolbarItemClick’ of undefined