Groupable and filterable don't working half on kendo grid

HI,

 

Ive got a partial view wich contains a grid of Kendo UI. The grid works fine exept some little things.

problems:

 

1.The .filterable doesn't work correctly. I see the icon to filter but it isn't showing any box where i can fill in some filter settings.

 2. Same for .Groupable . It shows a row for grouping on colums but i can't drag the columns on it.

3. It sais it showing 5 items on a page(dropdown option), however its showing 10 items on the page. And when i reset that to 10 it doesn't refresh to show the good results. 

 

CAN SOMEBODY TELL ME WHAT I'M DOING WRONG ???? I don't get it anymore ... THANKS 

 

VIEW: 

 

@using TelerikMvcApp1.Models
@model ProgramCollectorDataFilesStatus

@(Html.Kendo().Grid()
.Name("DataFilesGrid")

.Columns(columns =>
{
columns.Bound(d => d.LastDataFileID);
columns.Bound(d => d.DatFileName);
columns.Bound(d => d.DataFileCompleted);
columns.Bound(d => d.DataFileErrorID);
columns.Bound(d => d.CollectorID);
})
.Filterable()
.Sortable()
.Groupable()
.Pageable(pageable => pageable
.Refresh(true)
.PageSizes(true)
)
.BindTo(Model.DataFilesStatus)
)