[Q] Portupgrade error

[Anton Kazak]

Example of my error:

-----------------------------------------------------
> portupgrade libtool

--->  Upgrading 'libtool-1.3.5_1' to 'libtool-1.3.5_2' (devel/libtool13)
--->  Building '/usr/ports/devel/libtool13'
===>  Cleaning for libtool-1.3.5_2
===>   NOTICE:

This port is deprecated; you may wish to reconsider installing it:

Please use devel/libtool15 instead.

===>  Vulnerability check disabled
===>  Extracting for libtool-1.3.5_2
>> Checksum OK for libtool-1.3.5.tar.gz.
===>  Patching for libtool-1.3.5_2
===>  Applying FreeBSD patches for libtool-1.3.5_2
===>  Configuring for libtool-1.3.5_2
cp: /usr/ports/devel/libtool13/work/libtool-1.3.5
/usr/ports/devel/libtool13/work/libtool-1.3.5/config.guess: No such file or 
directory
*** Error code 1

Stop in /usr/ports/devel/libtool13.
** Command failed [exit code 1]: /usr/bin/script -qa /tmp/portupgrade26235.0 
make
** Fix the problem and try again.
** Listing the failed packages (*:skipped / !:failed)
        ! devel/libtool13 (libtool-1.3.5_1)     (unknown build error)
--->  Packages processed: 0 done, 1 ignored, 0 skipped and 1 failed
--------------------------------------------------------------------------------------------
I d'nt know this problem:
cp: /usr/ports/devel/libtool13/work/libtool-1.3.5 /usr/ports/devel/libtool13/work/libtool-1.3.5/config.guess: 
No such file or directory

Help me, PLS!
 
________
AK