Patch failure for Ruby18-gems-1.2.0 on amd64

[david at vizion2000.net]

Following error message: 
===>  Patching for ruby18-gems-1.2.0
===>   ruby18-gems-1.2.0 depends on file: /usr/local/bin/ruby18 - found
===>  Applying FreeBSD patches for ruby18-gems-1.2.0
=> Patch patch-lib-rubygems-source_info_cache.rb failed to apply cleanly.
*** Error code 1

Stop in /usr/ports/devel/ruby-gems

FreeBSD ***.vizion2000.net 7.0-STABLE FreeBSD 7.0-STABLE #0: Wed Jul 16
09:27:38 PDT 2008   @***.vizion2000.net:/usr/obj/usr/src/sys/GENERIC  amd64

This system has just been upgraded from 6.3 to 7.0-Stable. Is there a
possible connection here?

After getting this error I checked to make sure the port tree was uptofate
and tried again with the same result. 
I am currently recompiling ruby* ports on the system after a portsclean
with:
portupgrade -fr ruby*
Has anyone else experienced a similar problem?
I will report result of recompile when it finishes.

David