DataSource Objects dont appear on webforms

This is strange. When I first installed VB Web Developer I was able to see an AccessDataSource or an SQLDataSource on the webform and had access to the "smart tag" to configure the control. At some point, this stopped happening. When I drag any of the datasource controls to a webform, nothing appears BUT the asp code is written to the source. I have to configure the source by dragging a gridview or some other data display control onto the page.

I have tried to "repair" it through the control panel - I also tried removing and reinstalling it and there is no change - what am I missing here or rather what happened?

Any help would be appreciated - thanks