* 11:11:29  WARN <GdkPixbuf> Cannot open pixbuf loader module file '/Users/john/Development/Gnucash-Build/Gnucash-3-Mavericks/inst/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache': No such file or directory

This likely means that your installation is broken.
Try running the command
  gdk-pixbuf-query-loaders > /Users/john/Development/Gnucash-Build/Gnucash-3-Mavericks/inst/lib/gdk-pixbuf-2.0/2.10.0/loaders.cache
to make things work again for the time being.
* 11:11:29 OTHER <GLib-GIO> Settings schema 'org.gnucash.general' is not installed
