Unable to upgrade to libdmtx-0.7.4_5

[Dr. Peter Voigt]

After yesterday ports tree update I am unable to upgrade libdmtx:

# portmaster --no-confirm --no-term-title -D -G libdraw

gmake[2]: Leaving directory
`/usr/ports/graphics/ImageMagick/work/ImageMagick-6.8.9-3' ====>
Compressing man pages (compress-man) ===>  Installing for
ImageMagick-6.8.9.3_2,1 ===>  Checking if graphics/ImageMagick already
installed ===>   ImageMagick-6.8.9.3_2,1 is already installed
      You may wish to ``make deinstall'' and install this port again
      by ``make reinstall'' to upgrade it properly.
      If you really wish to overwrite the old port of
graphics/ImageMagick without deleting it first, set the variable
"FORCE_PKG_REGISTER" in your environment or the "make install" command
line. *** Error code 1

Stop.
make[1]: stopped in /usr/ports/graphics/ImageMagick
*** Error code 1

Stop.
make: stopped in /usr/ports/graphics/libdmtx

===>>> make build failed for graphics/libdmtx
===>>> Aborting update

===>>> Installation of graphics/ImageMagick (ImageMagick-6.8.9.3_2,1)
complete


===>>> You can restart from the point of failure with this command line:
       portmaster <flags> graphics/libdmtx 

I have tried to delete libdmtx and ImageMagic before installing the new
libdmtx version but it fails with exactly the same error.

My current configuration:

# uname -r
10.0-RELEASE-p4

# pkg version -v |egrep -i "libdmtx|imagemagic"
ImageMagick-6.8.9.3_2,1            =   up-to-date with port
libdmtx-0.7.4_4                    <   needs updating (port has 0.7.4_5)

Any ideas are appreciated.

Regards,
Peter