problems installing doxygen

[Bakki Kudva]

Hi,

I did a system upgrade to 1.7 and tried to install doxygen. I get...

>>>
--->  Activating xorg-renderproto @0.9.3_0
Error: Target org.macports.activate returned: Image error:
/opt/local/include/X11/extensions/render.h is being used by the active
render port.  Please deactivate this port first, or use the -f flag to
force the activation.
Error: The following dependencies failed to build: graphviz xorg-libs
xorg-libXcursor xorg-renderpro .............
.........ile xorg-libxkbui xorg-xcb-util
Error: Status 1 encountered during processing.
 >>>
I cannot understand how a .h file could be unavailable.

The port xorg-renderproto shows as being installed and active. Is
there some sort of circular reference here?
Can some one please help me understand what's going on? Thanks.

-bakki