Dear list, I've just searched the list archives for a similar problem and came up with http://lists.macosforge.org/pipermail/macports-users/2007- April/002294.html. The error-message I receive is absolutely the same, the only difference is that I'm not actually trying to install XFree86, as I have Apples X11 already installed. I checked /Library/ Receipts, and both the X11User.pkg and the X11SDK.pkg are installed... Can anybody please give me pointer in the right direction? As a side note, I used to have Fink installed on my system, but then removed it following the provided instructions, so I think this should be OK, or is it possible that this is related? Also, I can start /Applications/ Utilities/X11.app without any problems. Thank you! Sebastian