Problem with OS X installation instructions

[Daniel Smith]

I followed the instructions on this page to install the gnucash port:

<http://wiki.gnucash.org/wiki/MacOSX/MacPortsDetail>

I then decided to upgrade to the gnucash-devel port, and followed  
those instructions.

This resulted in a variety of errors due to conflicts between guile/ 
slib-guile and guile16/slib-guile16.  Examples:

Error: Target com.apple.activate returned: Image error: /opt/local/ 
bin/guile is being used by the active guile16 port.  Please  
deactivate this port first, or use the -f flag to force the activation.

Error: Target com.apple.destroot returned: could not create new link  
"/opt/local/var/db/dports/build/ 
_opt_local_var_db_dports_sources_rsync.rsync.darwinports.org_dpupdate_dp 
orts_devel_slib-guile/work/destroot//opt/local/share/guile/slib":  
that path already exists

I *think* the right sequence of commands to upgrade would be this:
sudo port deactivate gnucash
sudo port deactivate slib-guile16
sudo port deactivate guile16

My sequence of commands & missteps was much less direct, but I think  
it accomplished essentially the same thing.

—Dan