portupgrade fails to upgrade the package because the older version is installed

[Yuri]

I got the error below during portupgrade -aP.

Why wouldn't portupgrade just upgrade neon?

'pkgdb -F' doesn;t find any problems.

Yuri

===>  Installing for neon28-0.28.2_1

===>  neon28-0.28.2_1 conflicts with installed package(s):
      neon26-0.26.4_1

      They install files into the same place.
      Please remove them first with pkg_delete(1).
*** Error code 1

Stop in /usr/ports/www/neon28.