HubTile exception in Blend 2012 with "cannot convert to GridlayoutPosition"

[Carlos]

I installed the latest 2013.1. Now every time I add a RadHubTitle,  Blend exceptions (see attached image). 

C:\Program Files (x86)\Telerik\RadControls for Windows Phone 8 Q1 2013\Binaries\WindowsPhone\Telerik.*

I works fine in VS 2012 and runs fine in the the emulator and windows phone.  

Please help.

thanks 

[Victor]

Hello Carlos,

I am afraid that I can not reproduce this exception. Also, given the fact that it only occurs in blend is indicative that it might be its fault. Also, the exception states that it cannot convert a type to a type with the same name which may be due to an assembly mismatch. Why Blend loads two different versions of the same assembly is anyone's guess.

You can try uninstalling any previous versions of the controls and install just the latest release in a clean environment.

Greetings,
Victor
the Telerik team

[Carlos]

Victor,

I uninstalled/re-installed Telerik and blend. Still similar problem.  This issue started after I upgraded to Q1 2013 controls.  See attached excel and file for some more info.  

[Victor]

Hello Carlos,

Thanks for the info. We will notify you if we figure out what is causing these exceptions. Microsoft makes this extremely difficult however. There is no way we can debug what our code does inside Expression Blend and the exceptions being thrown provide zero information.

Regards,
Victor
the Telerik team

[Tomas]

After upgading to the latest version, I see the same problem. Sometimes instead of the exception, I get weird errors in VS xaml editor, e.g.

<telerikData:RadListPicker Header="Currency" ItemsSource="{Binding Currencies}" SelectedItem="{Binding SelectedCurrency, Mode=TwoWay}" />

It says "The local property Header can only be aplied to types that are derived from HeaderedItemsControl" and "The local property SelectedItem can only be aplied to types that are derived from RadSelector"

Wtf?

[Ivo]

Hello Tomas,
We've found a way to debug the issue, so we are currently working on it.

Regards,

Ivailo Dinkov

Telerik

[Till]

Could you make any progress on that issue? I guess I have the same problem with RadListPicker using the following code:
<telerikInput:RadListPicker ItemsSource="{Binding AvailableApps}" SelectedItem="{Binding SelectedApp, Mode=TwoWay}">..

Works fine, but fails to load in blend with the following exception:
The local property "SelectedItem" can only be applied to types that are derived from "RadSelector"

This is super annoying and I can´t use the control as I rely on the designer in my project.

[Victor]

Hi Till,

I am afraid that we were not able to diagnose this issue. We have very little design-time code and it executes normally. After that it crashes somewhere in the Visual Studio assemblies. It messes up the run-time type information somehow and can't match the different properties to their respective types.

Regards,
Victor
Telerik