make installworld problem

[Kenneth Hatteland]

suddenly after a while my FreeBSD 8.0 stable machine always fails make 
installworld. it has rarely been a problem before and when I appeared I 
just rebooted into multi user, csup and build it all once again and then 
success.

Now It always fails with an error saying this or that directory  is 
empty.......and csup and a new buildworld does not fix this.

maybe you need more input to have an opinion...just name it and I`ll 
provide it. My machine functions perfectly, but I can not finalize 
upgrades right now...buggerem

Blessed be..

Kenneth, Norway