I'm finding with XE2 that any form that contains a smooth control and the TeeGDIPlus component (which is part of TeeChart), causes an "Ambiguity between TGPGraphics and Advgdip::TGPGraphics" error, and similar errors for TGPFont, TGPPen, TGPBrush. I created a new project and placed each of the following on the main form:
TChart
TGDIPlus
TAdvSmoothComboBox
The project cannot then be compiled.
Cheers,
Kai