AsyncUpload Control Displaying Two times in radwindow..

[Itachi]

issue is 

i have a radgrid in that there is a raddropdown control on selection_index_changed() event of  dropdown i select select dropdown index==1 in grid. a radwindow model wil shows up there the asyncupload control show correctly then i click cancel then i select dropdown index==2 then again radwindow model shows up   the visibility of that asyncupload control is visible= false ...then again i close the radwindow model then  i select select dropdown index==1 the asyncupload control is visible=true but asyncupload control show up two time... 

Can this problem wil be fixed ... ?? kindly  suggestions...fix

Thanks..

[Itachi]

got it have to add Radstylesheetmanager ctrl in page...