Column width error in version 2011.1.613.1040

In the latest version the class GridViewLengthConverter is not working correct 
and disallowes correct displaying of column widths. My focus is on Star(*) columns.
some code snippets from current version:
private static string[] strings = new string[] 
  { "sizetocells", "px", "sizetoheader", "*", "auto" };
public enum GridViewLengthUnitType 
  { Auto, Pixel, SizeToCells, SizeToHeader, Star } 
The enum and string array MUST match otherwise the parser returns wrong enum value.

And just try this:
<UserControl
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d"
    x:Class="SilverlightApplication6.MainPage"
    Width="640" Height="480">
 
    <Grid x:Name="LayoutRoot" Background="White">
        <telerik:RadGridView RowIndicatorVisibility="Collapsed">
            <telerik:RadGridView.Columns>
                <telerik:GridViewDataColumn Width=".25*" Header="25% Col"/>
                <telerik:GridViewDataColumn Width=".75*" Header="75% Col"/>
            </telerik:RadGridView.Columns>
        </telerik:RadGridView>
    </Grid>
</UserControl>
 
The grid example does not render correctly. I think you have totally 2 problems. 

I need fixed version soon as possible. The versions before have another bugs, 
still with rendering errors on header cells.