Property preview image not displayed

Question

I'm using Measurement Studio 8.1 and Visual Studio2005. I want to create multiple tanks and Leds(NI Windows Forms Controls) dynamically and also set different styles for them.

I've created a C# application to create a GUI to dynamically create NI Windows Forms Controls and also set their properties (similar to designer screen in a WinForms application).

When I run this application and create a Tank control, in my properties window the TankStyle property is listing only the Style names but the preview images are empty. But in case of LED, this feature works fine. I've made sure that both Tank and LED controls are programmed the same way.

If anyone has come across such an issue or knows how to display the preview images of  the styles listed under TankStyle property please reply.

Thank you.