thank you for your answer ryan. I could try to upgrade Gtksourceview (1.8.3 -> 2.0-0.10), if I am able to install it, by the way, maybe you can give me some help: gtksourceview has as a dependency gnome-sharp, which I can't install: version 2.0>=1.9.3 is needed, I installed manually version 2.16, but it do not recognize gtk# v2.10.0, and I receive the following message: checking for GTKSHARP... configure: error: Package requirements (gtk- sharp-2.0 >= 2.9.0) were not met: No package 'gtk-sharp-2.0' found Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix. Alternatively, you may set the environment variables GTKSHARP_CFLAGS and GTKSHARP_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details. gtk# has been installed manually(no active port on macports). Have you any suggestion?