How to get GnuCash on MacPorts/OS X working again

[Marc André Selig]

To everybody who has been struggling with GnuCash as installed  
through MacPorts lately:

MacPorts has been providing slib 3a4 for the last few days.  GnuCash  
does not work with this version at the moment.  MacPorts will now  
install the previous (known good) version of slib again.  However,  
you may have to downgrade manually.

You should be able to fix your GnuCash installation by re-installing  
slib and slib-guile:

sudo port selfupdate
sudo port -f uninstall slib
sudo port install slib
sudo port -f uninstall slib-guile
sudo port install slib-guile

Hope this helps!

Regards,
Marc