RadComboBox not showing images if I use a usercontrol

[Jorge]

I have a page with a FormView which several RadComboBoxes. Everything works OK. If I insert a usercontrol in the formview, RadComboBox images are not show.

Using Firebug I noticed that some images point to: mvwres://Telerik.Web.UI, Version=2010.1.415.40...
For example:
RadComboBox_Default .rcbArrowCellRight
url("mvwres://Telerik.Web.UI, Version=2010.1.415.40, Culture=neutral, PublicKeyToken=121fae78165ba3d4/Telerik.Web.UI.Skins.Default.ComboBox.rcbSprite.png")

I have remove the usercontrol and try again, everything comes back to normality (the mvwres:// urls are removed).

Any ideas?
Thanks!

[Jorge]

DONE!
Buggy VS2010 generated a lot of fake css styles in the webusercontrol ascx file. Deleting this styles solved the problem.

Thanks anyway.