Mine

config.status: creating src/Makefile
config.status: creating src/icons/Makefile
config.status: creating test/Makefile
config.status: creating doc/Makefile
config.status: creating doc/dev/Makefile
config.status: creating viking.spec
config.status: creating src/config.h
config.status: executing depfiles commands
/usr/bin/make -C . 
make[1]: Entering directory `/tmp/buildd/viking-0.1.3'
Making all in src
make[2]: Entering directory `/tmp/buildd/viking-0.1.3/src'
/usr/bin/make  all-recursive
make[3]: Entering directory `/tmp/buildd/viking-0.1.3/src'
Making all in icons
make[4]: Entering directory `/tmp/buildd/viking-0.1.3/src/icons'
gdk-pixbuf-csource --name="`basename addtr_18.png .png`" --struct addtr_18.png > addtr_18.png_h
failed to load "addtr_18.png": Couldn't recognize the image file format for file 'addtr_18.png'
make[4]: *** [addtr_18.png_h] Error 1
make[4]: Leaving directory `/tmp/buildd/viking-0.1.3/src/icons'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/tmp/buildd/viking-0.1.3/src'
make[2]: *** [all] Error 2
make[2]: Leaving directory `/tmp/buildd/viking-0.1.3/src'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/tmp/buildd/viking-0.1.3'
make: *** [debian/stamp-makefile-build] Error 2
pbuilder: Failed autobuilding of package
 -> Aborting with an error
 -> unmounting dev/pts filesystem
 -> unmounting proc filesystem
 -> cleaning the build env 
    -> removing directory /var/cache/pbuilder/build//13581 and its subdirectories