I opened the latest version of the Silverlight dll Telerik.Windows.Themes.Windows8.dll and looked at the resource RadRadioButtonStyle. In the decompiled output I find things like example 1 below. Note the line in bold and Italic (VisibleVisible). This will obviously not compile when I try to use it. Another problem is that it generates <Grid.VisualStateGroups> instead of <VisualStateManager.VisualStateGroups>. This does not compile either.
<
VisualState
x:Name
=
"DisabledChecked"
>
<
Storyboard
>
<
DoubleAnimation
Storyboard.TargetName
=
"Content"
Storyboard.TargetProperty
=
"Opacity"
To
=
"0.5"
Duration
=
"0"
/>
<
ObjectAnimationUsingKeyFrames
Duration
=
"0:0:0"
Storyboard.TargetName
=
"DisabledCheckedVisual"
Storyboard.TargetProperty
=
"Visibility"
>
<
DiscreteObjectKeyFrame
KeyTime
=
"0:0:0"
>
<
DiscreteObjectKeyFrame.Value
>
<
Visibility
>
VisibleVisible</
Visibility
>
</
DiscreteObjectKeyFrame.Value
>
</
DiscreteObjectKeyFrame
>
</
ObjectAnimationUsingKeyFrames
>
</
Storyboard
>
</
VisualState
>