Error in portupgrading -rR mldonkey

[FreeBsdBeni]

Hello,

I'm running FreeBSD 5.2.1-RELEASE-p10 with the sources and ports updated on 
Sun Oct  3. When trying to portupgrade mldonkey, I get the following 
message :

ocamlopt.opt -inline 10    -I src/utils/cdk  -I src/daemon/chat  -I 
src/gtk/chat  -I src/utils/lib  -I src/utils/ocamlrss  -I src/utils/xml-light  
-I src/utils/net  -I tools  -I src/daemon/common  -I src/daemon/driver  -I 
src/utils/mp3tagui  -I src/config/unix  -I src/gtk/newgui  -I 
src/gtk/configwin  -Isrc/gtk/okey  -I src/gtk/gpattern  -I icons/tux  -I 
+lablgtk  -I src/gtk/progress  -I src/gtk/im  -I src/gtk/im/yahoo  -I 
src/gtk/im/irc  -I src/networks/gnutella  -I src/networks/gnutella2  -I 
src/networks/fasttrack  -I src/networks/fileTP  -I src/networks/bittorrent  
-I src/networks/donkey -c src/gtk/configwin/configwin_types.ml
/usr/local/lib/ocaml/lablgtk/gPack.cmi is not a compiled interface
gmake: *** [src/gtk/configwin/configwin_types.cmx] Error 2
*** Error code 2

Stop in /usr/ports/net/mldonkey.
** Command failed [exit code 1]: /usr/bin/script -qa /tmp/portupgrade1081.11 
make
** Fix the problem and try again.
** Listing the failed packages (*:skipped / !:failed)
        ! net/mldonkey (mldonkey-2.5.21)        (compiler error)
--->  Packages processed: 0 done, 11 ignored, 0 skipped and 1 failed


I've reinstalled ocaml, which went ok but was the same version as before, but 
still no luck with mldonkey.

Any hints on what goes wrong here ?

Thx !
-- 
FreeBsdBeni.