===> Installing for lua51-5.1.5_7

[Jos Chrispijn]

   Just tried to install from ports but got this error during
   installation:
   ===>  Installing for lua51-5.1.5_7
   install  -o root -g wheel -m 444
   /usr/ports/lang/lua51/work/lua-5.1.5/etc/lua.pc
   /usr/ports/lang/lua51/w
   ork/stage/usr/local/libdata/pkgconfig/lua-5.1.pc
   ====> Compressing man pages (compress-man)
   ===>  Installing for lua51-5.1.5_7
   ===>  Checking if lang/lua51 already installed
   ===>   Registering installation for lua51-5.1.5_7
   Installing lua51-5.1.5_7...pkg-static: lua51-5.1.5_7 conflicts with
   lua-5.1.5_6 (installs files into the same place).
   Problematic file: /usr/local/include/lua51/lauxlib.h
   *** [fake-pkg] Error code 70
   ! lua51-5.1.5_6 not even installed.
   Can you tell me how to solve this? Thanks in advance.
   best regards,
   Jos Chrispijn