It would be great to have an auto-save feature in Visual Style Builder for when/if VSB crashes or quits improperly and theme wasn't saved.  

See my forum post for more information, at: 
http://www.telerik.com/forums/visual-style-builder-frozen---does-it-do-any-auto-saving

Resolution: Under Tools>>Settings in VSB there is an option to enable/disable saving auto recovery info and the interval at which this info is saved. The auto recovery data is saved as a .tssp file in the C:\Users\<username>\AppData\Roaming\VsbRecoveryData\ folder. The mechanism is as follows every X minutes the file is overwritten with the current state of the theme in VSB. If VSB is closed gracefully or the theme is unloaded the auto recovery data is deleted. If VSB crashes the data in the auto recovery folder remains. On the next VSB start this folder is checked for content and if there is any the user is offered a choice to load this content.

Users should be able to add images to TreeNodeUI's states by using Visual Style Builder.

If you click on the RadGridViewElement node in VSB while one of our predefined themes is opened, you will get an exception.

RadPanel should have a Disabled state in Visual Style Builder

To reproduce: 
1. Open ThemeViewer 
2. Choose theme Desert 
3. Check View RTL support
4. Check 'Aero mode on' of ribbonbar & backstageview, after that click on 'show form' button
5. Check 'Aero mode on' of RibbonBar & Office2007 App Men, after that click on 'show form' button and will see that ThemeViewer crash
When set theme Desert and change values of the properties of RibbonBar in the VisualStyleBuilder generate the same error.

The Text and Image Primitives of RadButton are not exposed in VSB

FIX. VSB - error when trying to preview a theme in ThemeViewer and the current directory is different

Open Package Windows7.tssp - RadPageView - RadPageViewStripElement - StripViewContainer - StripViewButtonsPanel - LeftScroll.  Edit Repository Item StripLeftArrow.  Click inside Image property to highlight - Unhandled Exception.

Telerik Metro theme is not exported by VSB

If you load a layout where there are horizontal splitters, you will notice that their theme is not correct.

Implementation of the new Visual Style Builder.

Add "Design View" and "Preview" tabs in the View menu of the Visual Style Builder. Currently you could hide them by clicking the scroll button and there is no easy way to restore them

If you pick a font in the style builder that doesn't have a 'normal' setting (like a bold-only font) the VSB will crash.