Cannot build kdeedu 4.3.5 on FreeBSD 8.0 AMD64

[Troy]

When building kdeedu4 running 8.0 on AMD64, the following happened.  Any
thoughts?

[ 92%] Generating solver.o
File "_none_", line 1, characters 0-1:
Error: Files /usr/local/lib/ocaml/facile/facile.cmxa
       and /usr/local/lib/ocaml/stdlib.cmxa
       make inconsistent assumptions over interface Buffer
*** Error code 2

Stop in /usr/ports/misc/kdeedu4/work/kdeedu-4.3.5/build.
*** Error code 1

Stop in /usr/ports/misc/kdeedu4/work/kdeedu-4.3.5/build.
*** Error code 1

Stop in /usr/ports/misc/kdeedu4/work/kdeedu-4.3.5/build.
*** Error code 1

Stop in /usr/ports/misc/kdeedu4.