Fedora Core 6 to Fedora 7 upgrade woes

Upgrading from FC6 to Fedora-7 has mostly been a disaster. Many, many packages did not upgrade properly, leaving me with a mix of fc6 and fc7 packages on my system. Trying to update packages frequently does not work due to one error or another with stale fc6 packages. All too often I have to rpm -e a complete package set, then re-install with yum. Python is messed up. gnucash wouldn’t run, first because of this error:

gnucash-bin: error while loading shared libraries: libgtkhtml-3.8.so.15:
cannot open shared object file: No such file or directory

yum update -y gnucash guile-devel got closer:

gnc.bin-Message: main: binreloc relocation support was disabled at
configure time.ERROR: In procedure open-file:

ERROR: No such file or directory: "/usr/share/guile/1.8/slib/require"

Then:

http://www.fedoraforum.org/forum/showthread.php?t=156431

yum install -y guile-devel gtkhtml38 libgsf-gnome goffice

still didn’t work. ln -s /usr/share/guile/1.8/slib /usr/share/slib changed the error to:

ERROR: No such file or directory: "/usr/share/guile/1.8/slib/mklibcat"

This did not work, links to the library seemed to be broken.
http://rpmfind.net/linux/rpm2html/search.php?query=libgtkhtml-3.8.so.15

yum install g-wrap g-wrap-devel

didn't help either.

ln -s /usr/share/slib /usr/share/guile/1.8/slib

ls -l /usr/share/guile/1.8/slib/mklibcat*

-rw-r--r-- 1 root root 8120 2006-07-12 09:19 /usr/share/guile/1.8/slib/mklibcat.scm

attempting to build from gnucash 2.2.1 source resulted in
“libgoffice not found.”

Accidentally installed libgnome-2.18.0-4.fc7.i386.rpm

now it works???