@conflicts in /var/db/pkg/*/+CONTENTS

[freebsd at usmstudent.com]

Whenever I run pkg_info, I am receiving error messages that indicate conflicts 
with my packages.  For example, when I run pkg_info, I get:

pkg_info: read_plist: bad command '@conflicts libX11-*'

grep'ing for libX11-* in /var/db/pkg shows the offending package to be 
XFree86.  Or, more specifically:  XFree86-libraries-4.3.0_7

I was getting another conflict with fontconfig, but reinstalling it with 
"portinstall -rP" helped.  I tried reinstalling XFree86-libraries.  But, this 
time it didn't help.  Running pkgdb -F exits normally without error.  But, it 
doesn't help resolve the conflicts.  Would including "-R" as an option to 
portinstall help?

I have seen similar problems on Google.  Yet, I don't see any solutions.  

There are only 2 things that I can think of that would be worth mentioning 
that could possibly be related to the problem.  First is that since I am 
running 4.6-RELEASE, my system may be too old to work properly with current 
ports.  The second is that I recently moved my installation to another HD.  
That's been a couple of months ago and I haven't noticed any other problems 
with that transition.  

One last bit of information that might be helpful to mention is that I use 
portupgrade.

As a possible fix, I have considered upgrading to 4.10-RELEASE.  But, I'm 
fearful that I will end up trashing my box completely.  

Any suggestions?

TIA,
Darren