Activiting error on XFree86, while building lostirc

dear sir/madam

This is what happened while installing lostirc

--->  Installing XFree86 4.5.0_2
--->  Activating XFree86 4.5.0_2
Error: Target com.apple.activate returned: Image error: /usr/X11R6/ 
include/DPS/ColorSB.h already exists and does not belong to a  
registered port.  Unable to activate port XFree86.
Error: The following dependencies failed to build: gtkmm gtk2 XFree86  
atk cairo expat fontconfig freetype libpixman render xrender pango  
Xft2 tiff
Error: Status 1 encountered during processing.

Thank you

Nigel Taylor