Error on pkg creation

[René Mølsted]

Hi folks
Being rather new to Macports I might be overseeing stuff here.
I tried creating a pkg-file of zlib among others. The first time i  
ran '/opt/local/bin/port pkg zlib' it returned the error below, then  
I ran the command again immediately after with success. That happened  
with most of my ports.

Any logical explanation I'm missing?

-- 
Rene

------------ OUTPUT FROM SHELL ------------

# /opt/local/bin/port pkg zlib
--->  Creating pkg for zlib-1.2.3
Error: Target org.macports.pkg returned: shell command "mkbom /opt/ 
local/var/macports/build/ 
_opt_local_var_macports_sources_rsync.macports.org_release_ports_archive 
rs_zlib/work/destroot /opt/local/var/macports/build/ 
_opt_local_var_macports_sources_rsync.macports.org_release_ports_archive 
rs_zlib/work/zlib-1.2.3.pkg/Contents/Archive.bom" returned error 1
Command output: can't stat /opt/local/var/macports/build/ 
_opt_local_var_macports_sources_rsync.macports.org_release_ports_archive 
rs_zlib/work/destroot (No such file or directory)
can't make bom /opt/local/var/macports/build/ 
_opt_local_var_macports_sources_rsync.macports.org_release_ports_archive 
rs_zlib/work/zlib-1.2.3.pkg/Contents/Archive.bom for dir /opt/local/ 
var/macports/build/ 
_opt_local_var_macports_sources_rsync.macports.org_release_ports_archive 
rs_zlib/work/destroot

# /opt/local/bin/port pkg zlib
--->  Creating pkg for zlib-1.2.3
--->  Package for zlib-1.2.3 is up-to-date