diff --git a/Apps/koffice/koffice.SlackBuild b/Apps/koffice/koffice.SlackBuild
index 0212fec..b4f8ca7 100644
--- a/Apps/koffice/koffice.SlackBuild
+++ b/Apps/koffice/koffice.SlackBuild
@@ -25,14 +25,57 @@
 
 PRGNAM=koffice
 VERSION=${VERSION:-$TDEVERSION}
-BUILD=${BUILD:-1}
+BUILD=${BUILD:-2}
 TAG=${TAG:-_tde}
 
+## if GraphicsMagick not chosen in BUILD-TDE.sh, set up build to use ImageMagick
+[[ ${USE_GM_LIBS:-} != yes ]] && IM_LDFLAGS=$($(which Magick++-config) --libs)
+
+## build with libpng-1.4 - set in BUILD-TDE.sh - loading pngs in chalk/krita crashes with libpng16
+[[ ${USE_PNG14:-} == yes ]] && \
+[[ $(ls -l /usr/include/png.h) != *libpng14* ]] && \
+{ [[ $(getconf LONG_BIT) == 64 ]] && ARCH=x86_64 || ARCH=i686
+} && \
+{ installpkg $LIBPNG_TMP/libpng-1.4.20-$ARCH-1.txz || \
+{ echo -e "\033[39;1m\n (re)install libpng-1.4 \n\033[0m" && \
+exit
+}
+} || true
+
+
 source ../../get-source.sh
 getsource_fn
 
 untar_fn
 
+## fix chalk crashing - set liblcms as a direct dependency - see issue 37 for details
+sed -i '2iLCMS1LIBS = -llcms' chalk/Makefile.am
+sed -i 's|LDADD) \\$(LIBS)|& \\$(LCMS1LIBS)|' admin/am_edit
+
+## fix chalk crashing when launched from Applications menu
+sed -i "s|Exec=.*$|Exec=$INSTALL_TDE/bin/chalk %U|" chalk/chalk.desktop
+
+## revert name 'chalk' to 'krita' - set in BUILD-TDE.sh
+[[ ${REVERT:-} == yes ]] && APP=krita && \
+(echo -e "\n Reverting chalk to krita .. \n"
+## Rename directories and files:
+mv chalk krita
+for file in $(find . -name "*chalk*")
+do
+rename chalk krita $file 2>/dev/null || true # errors will be corrected next loop
+done
+## repeat for instances of 'chalk' appearing twice:
+for file in $(find . -name "*chalk*")
+do
+rename chalk krita $file
+done
+mv "krita/doc/Developing Chalk Plugins.odt" "krita/doc/Developing Krita Plugins.odt"
+## Rename contents:
+find . -type f -exec sed -i -e 's/chalk/krita/g' {} \;
+find . -type f -exec sed -i -e 's/CHALK/KRITA/g' {} \;
+find . -type f -exec sed -i -e 's/Chalk/Krita/g' {} \;
+sed -i 's|Swedish for krita|Swedish for chalk|' krita/README)
+
 listdocs_fn
 
 ltoolupdate_fn
@@ -42,7 +85,7 @@ chown_fn
 cd_builddir_fn
 
 # Refusing to compile with Clang =[
-LDFLAGS="${SLKLDFLAGS} $($(which Magick++-config) --libs)" \
+LDFLAGS="${SLKLDFLAGS} ${IM_LDFLAGS:-}" \
 CFLAGS="${SLKCFLAGS} $TQT_INCLUDE_PATH" \
 CXXFLAGS="${SLKCFLAGS}" \
 CC="gcc" \
@@ -52,8 +95,7 @@ CXX="g++" \
    --sysconfdir="/etc/trinity" \
    --mandir=${INSTALL_TDE}/man \
    --disable-rpath \
-   --enable-closure \
-   --build=$ARCH-slackware-linux
+   --enable-closure
 
 make_fn
 
@@ -71,7 +113,7 @@ echo "
 # make exactly 11 lines for the formatting to be correct.  It's also
 # customary to leave one space after the ':'.
 
-        |-----handy-ruler------------------------------------------------------|
+$PRGNAM|-----handy-ruler------------------------------------------------------|
 $PRGNAM: $PRGNAM (Office Suite)
 $PRGNAM:
 $PRGNAM: KOffice is a collection of office applications linked together by a 
@@ -97,8 +139,9 @@ if [ -d usr/share/icons/hicolor ]; then
     chroot . /usr/bin/gtk-update-icon-cache -f -t ${INSTALL_TDE}/share/icons/hicolor 1> /dev/null 2> /dev/null
   fi
 fi
-
 EOINS
 
-
 makepkg_fn
+
+## restore libpng16 links
+[[ ${USE_PNG14:-} == yes ]] && libpng16_fn || true
diff --git a/BUILD-TDE.sh b/BUILD-TDE.sh
index 3ad185f..ffe7ea4 100755
--- a/BUILD-TDE.sh
+++ b/BUILD-TDE.sh
@@ -69,6 +69,7 @@ build_core()
 # These need to be set here:
 export INST=1
 TMP=${TMP:-/tmp}
+export LIBPNG_TMP=$TMP
 ROOT=$(pwd)
 
 
@@ -355,7 +356,8 @@ Non-TDE apps are in the Misc category and don't need the \Zb\Zr\Z4R\Znequired TD
 "Apps/knemo" "The TDE Network Monitor" off "\Zb\Z6   \Zn" \
 "Apps/knights" "A graphical chess interface" off "\Zb\Z6   \Zn" \
 "Apps/knmap" "A graphical nmap interface" off "\Zb\Z6 Might need tdesudo \Zn" \
-"Apps/koffice" "Office Suite" off "\Zb\Z6   \Zn" \
+" Misc/GraphicsMagick" "Swiss army knife of image processing" off "\Zb\Z6 Buildtime option for chalk[krita]  \Zn" \
+"Apps/koffice" "Office Suite" off "\Zb\Z6 Optional build-time dependencies - GraphicsMagick/libpng14 [for chalk/krita]  \Zn" \
 "Apps/koffice-i18n" "Internationalization files for koffice" off "\Zb\Z6 Required for koffice when \Zb\Z3Additional language support\Zb\Z6 has been selected  \Zn" \
 "Apps/ksensors" "A graphical interface for sensors" off "\Zb\Z6 Runtime requirement ap/lm_sensors \Zn" \
 "Apps/kscope" "A source-editing environment for C and C-style languages." off "\Zb\Z6 Runtime options cscope [d/cscope], ctags [ap/vim], dot [graphviz] \Zn" \
@@ -372,13 +374,50 @@ Non-TDE apps are in the Misc category and don't need the \Zb\Zr\Z4R\Znequired TD
 "Apps/tdeio-locate" "TDE frontend for the locate command" off "\Zb\Z6   \Zn" \
 "Apps/tdesudo" "Graphical frontend for the sudo command" off "\Zb\Z6   \Zn" \
 "Apps/twin-style-crystal" "twin theme" off "\Zb\Z6   \Zn" \
-" Misc/GraphicsMagick" "Swiss army knife of image processing" off "\Zb\Z6   \Zn" \
 " Misc/inkscape" "SVG editor" off "\Zb\Z6 Requires lxml if online help facility is required. \Zn" \
 " Misc/lxml" "Python bindings for libxml2 and libxslt" off "\Zb\Z6 Required to use Inkscape online help \Zn" \
 2> $TMPVARS/TDEbuilds
 # successful builds are removed from the TDEbuilds list by '$dir ' so add a space to the last entry
 # and the " needs to be removed because the Misc entries are double-quoted
 sed -i -e 's|$| |' -e 's|"||g' $TMPVARS/TDEbuilds
+
+
+## only run this if building koffice has been selected
+[[ $(sed 's|koffice-||' $TMPVARS/TDEbuilds | grep -o Apps/koffice) ]] && \
+{
+rm -f $TMPVARS/Krita_OPTS
+dialog --nocancel --no-shadow --colors --title " Building chalk in koffice " --item-help --checklist \
+"\n
+There are three options that can be set up for building the imaging app in koffice.
+\n\n
+[1] It is called \Zb\Z3chalk\Zn in TDE but is known as \Zb\Z3krita\Zn most other places.
+\n\n
+[2] .pngs loaded into chalk/krita will crash if it is built with libpng-1.6, but will load if libpng-1.4 is used for the build.
+\n
+  If libpng is chosen here, it will be added to the build list and the package placed in $TMP - not installed. It will then be installed by koffice.SB if the libpng unversioned headers and libs are not linked to libpng14.
+\n
+  The koffice.SB will restore those links to libpng16 when the build has finished or failed.
+\n\n
+[3] The build will prefer ImageMagick to GraphicsMagick if both are installed but many image formats crash with IM, so GM is recommended.
+\n
+  If GM is chosen here, that preference will be overridden and GM will be added to the build list if not already selected or installed." \
+28 75 3 \
+" krita" "Set the app name to krita" on "\Zb\Z6 otherwise will be \Zb\Z3chalk\Zn \Zb\Z6 \Zn" \
+" libpng14" "Build with libpng-1.4" on "\Zb\Z6 otherwise will be \Zb\Z3libpng-1.6\Zn \Zb\Z6 \Zn" \
+" useGM" "Use GraphicsMagick" on "\Zb\Z6 otherwise will be \Zb\Z3ImageMagick\Zn \Zb\Z6[if installed] \Zn" \
+2> $TMPVARS/Krita_OPTS
+## If GM has been selected and isn't in the build list or installed, add it to the build list before koffice
+GM_VERSION=$(grep VERSION:- $ROOT/Misc/GraphicsMagick/GraphicsMagick.SlackBuild|cut -d- -f2|cut -d} -f1)
+[[ $(cat $TMPVARS/Krita_OPTS) == *useGM* ]] && \
+[[ $(cat $TMPVARS/TDEbuilds) != *GraphicsMagick* ]] && \
+[[ ! $(ls /var/log/packages/GraphicsMagick-${GM_VERSION}* 2>/dev/null) ]] && \
+sed -i 's|Apps/koffice|Misc/GraphicsMagick &|' $TMPVARS/TDEbuilds
+## If libpng-1.4 has been selected and hasn't already been built, add it to the build list before koffice
+PNG_VERSION=$(grep VERSION:- $ROOT/Misc/libpng/libpng.SlackBuild|cut -d- -f2|cut -d} -f1)
+[[ $(cat $TMPVARS/Krita_OPTS) == *libpng14* ]] && \
+[[ ! $(ls $LIBPNG_TMP/libpng-${PNG_VERSION}-*-1.txz 2>/dev/null) ]] && \
+sed -i 's|Apps/koffice|Misc/libpng &|' $TMPVARS/TDEbuilds
+}
 }
 
 [[ ! -e $TMPVARS/TDEbuilds ]] && run_dialog
@@ -409,7 +448,7 @@ Setup is complete.
 \n\n
  \Z1S\Zb\Z0tart\Zn building the packages or \Zr\Z4\ZbAbort\Zn" \
 9 75
-[[ $(echo $?) == 1 ]] && echo && echo && echo "Build aborted" && echo && exit 1
+[[ $(echo $?) == 1 ]] && echo -e "\n\nBuild aborted\n" && exit 1
 echo
 
 ######################
@@ -425,6 +464,10 @@ export I18N=$(cat $TMPVARS/I18N)
 export TQT_DOCS=$(cat $TMPVARS/TQT_DOCS)
 export EXIT_FAIL=$(cat $TMPVARS/EXIT_FAIL)
 export KEEP_BUILD=$(cat $TMPVARS/KEEP_BUILD)
+# these exports are for koffice.SB
+[[ $(cat $TMPVARS/Krita_OPTS 2>/dev/null) == *krita* ]] && export REVERT=yes
+[[ $(cat $TMPVARS/Krita_OPTS 2>/dev/null) == *useGM* ]] && export USE_GM_LIBS=yes
+[[ $(cat $TMPVARS/Krita_OPTS 2>/dev/null) == *libpng14* ]] && export USE_PNG14=yes
 
 # See which compiler was selected and use the appropriate C++ compiler
 [[ $(cat $TMPVARS/COMPILER) == gcc ]] && export COMPILER_CXX="g++" || export COMPILER_CXX="clang++"
@@ -485,24 +528,39 @@ do
 
 checkinstall ()
 {
-if [[ $(ls /var/log/packages/${package}-*$(eval echo $version)-*-${build}*) ]]; then
-sed -i "s|$dir ||" $TMPVARS/TDEbuilds
-else
+## test for what package is being built .. 
+## if it's not libpng, test for the package installed
+## otherwise test for the libpng package only, not installed
+{
+{
+[[ ${package} != libpng ]] && [[ $(ls /var/log/packages/${package}-*$(eval echo $version)-*-${build}* 2>/dev/null) ]]
+} || {
+[[ ${package} == libpng ]] && [[ $(ls $LIBPNG_TMP/${package}-$(eval echo $version)-*-${build}*.txz 2>/dev/null) ]]
+}
+} && \
+## if either test is successful, the above will exit 0, then remove 'package' from the build list \
+sed -i "s|$dir ||" $TMPVARS/TDEbuilds || \
+## if unsuccessful, display error message \
+{
 echo "
       Error:  ${package} package build failed
       Check the build log $TMP/${package}-build-log
       "
+## if koffice was building with libpng14, restore the libpng16 headers for any following builds
+[[ ${USE_PNG14:-} == yes ]] && source $ROOT/get-source.sh && libpng16_fn || true
 ${EXIT_FAIL:-":"}
-fi
+}
 }
 # tde-i18n package installation is handled in tde-i18n.SlackBuild because if more than one i18n package is being built, only the last one will be installed by upgradepkg
 ## tidy-html5 is a special case because the version number is not in the archive name
+## create libpng-1.4 package only - it will be installed by the koffice.SB because it overrides libpng headers which for Sl14.2/current point to libpng16.
 [[ ${package} == tidy-html5 ]] && version=$(unzip -c tidy-html5-master.zip | grep -A 1 version.txt | tail -n 1)
-if [[ $INST == 1 ]] && [[ ${package} != tde-i18n ]]; then upgradepkg --install-new --reinstall $TMP/${package}-$(eval echo $version)-*-${build}*.txz
+if [[ $INST == 1 ]] && [[ ${package} != tde-i18n ]] && [[ ${package} != libpng ]]; then upgradepkg --install-new --reinstall $TMP/${package}-$(eval echo $version)-*-${build}*.txz
 checkinstall
 ## test for last language in the I18N list to ensure they've all been built
 elif [[ $INST == 1 ]] && [[ ${package} == tde-i18n ]]; then package=${package}-$(cat $TMPVARS/LASTLANG)
 checkinstall
+elif [[ ${package} == libpng ]]; then checkinstall
 fi
 
   # back to original directory
diff --git a/Misc/GraphicsMagick/GraphicsMagick.SlackBuild b/Misc/GraphicsMagick/GraphicsMagick.SlackBuild
index 7d31b44..544b4f4 100755
--- a/Misc/GraphicsMagick/GraphicsMagick.SlackBuild
+++ b/Misc/GraphicsMagick/GraphicsMagick.SlackBuild
@@ -24,11 +24,12 @@
 #   SUCH DAMAGE.
 
 PRGNAM=GraphicsMagick
-VERSION=${VERSION:-1.3.21}
+VERSION=${VERSION:-1.3.25}
 BUILD=${BUILD:-1}
 TAG=${TAG:-}
 
-SRCURL="http://downloads.sourceforge.net/graphicsmagick/${PRGNAM}-${VERSION}.tar.bz2"
+SRCURL="https://downloads.sourceforge.net/project/graphicsmagick/graphicsmagick/${VERSION}/GraphicsMagick-${VERSION}.tar.xz"
+ARCHIVE_TYPE="tar.xz"
 source ../../get-source.sh
 getsource_fn
 
diff --git a/Misc/libpng/libpng.SlackBuild b/Misc/libpng/libpng.SlackBuild
new file mode 100755
index 0000000..c1304c1
--- /dev/null
+++ b/Misc/libpng/libpng.SlackBuild
@@ -0,0 +1,83 @@
+#!/bin/sh
+# Copyright 2015-2017  tde-slackbuilds project on GitHub
+# All rights reserved.
+#
+#   Permission to use, copy, modify, and distribute this software for
+#   any purpose with or without fee is hereby granted, provided that
+#   the above copyright notice and this permission notice appear in all
+#   copies.
+#
+#   THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+#   WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+#   MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+#   IN NO EVENT SHALL THE AUTHORS AND COPYRIGHT HOLDERS AND THEIR
+#   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+#   USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+#   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+#   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+#   OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+#   SUCH DAMAGE.
+
+PRGNAM=libpng
+VERSION=${VERSION:-1.4.20}
+BUILD=${BUILD:-1}
+TAG=${TAG:-}
+
+SRCURL="https://downloads.sourceforge.net/project/libpng/libpng14/$VERSION/libpng-$VERSION.tar.xz"
+ARCHIVE_TYPE="tar.xz"
+
+source ../../get-source.sh
+getsource_fn
+
+untar_fn
+
+listdocs_fn
+
+chown_fn
+
+cd_builddir_fn
+
+CFLAGS="$SLKCFLAGS" \
+../configure \
+  --prefix=/usr \
+  --sysconfdir=/etc \
+  --libdir=/usr/lib${LIBDIRSUFFIX} \
+  --includedir=/usr/include \
+  --mandir=/usr/man \
+  --disable-static
+
+make_fn
+
+installdocs_fn
+
+mangzip_fn
+
+strip_fn
+
+mkdir_install_fn
+
+echo "
+# HOW TO EDIT THIS FILE:
+# The 'handy ruler' below makes it easier to edit a package description.  Line
+# up the first '|' above the ':' following the base package name, and the '|'
+# on the right side marks the last column you can put a character in.  You must
+# make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':'.
+
+$PRGNAM|-----handy-ruler------------------------------------------------------|
+$PRGNAM: $PRGNAM (Portable Network Graphics library)
+$PRGNAM:
+$PRGNAM: PNG (Portable Network Graphics) is an extensible file format for the
+$PRGNAM: lossless, portable, well-compressed storage of raster images.  PNG
+$PRGNAM: provides a patent-free replacement for GIF and can also replace many
+$PRGNAM: common uses of TIFF.  Indexed-color, grayscale, and truecolor images
+$PRGNAM: are supported, plus an optional alpha channel.  Sample depths range
+$PRGNAM: from 1 to 16 bits.
+$PRGNAM:
+$PRGNAM:
+$PRGNAM:
+" > $PKG/install/slack-desc
+
+makepkg_fn
diff --git a/get-source.sh b/get-source.sh
index 054030a..aaeeb99 100755
--- a/get-source.sh
+++ b/get-source.sh
@@ -235,3 +235,16 @@ cat $PKG/install/slack-desc | grep "^${PRGNAM}" | grep -v handy > $OUTPUT/${PRGN
 umask ${_UMASK_}
 }
 
+libpng16_fn ()
+{
+(cd /usr/bin
+ln -sf libpng16-config libpng-config )
+(cd /usr/include
+ln -sf libpng16/pngconf.h pngconf.h
+ln -sf libpng16/png.h png.h )
+(cd /usr/lib64/pkgconfig
+ln -sf libpng16.pc libpng.pc )
+(cd /usr/lib64
+ln -sf libpng16.so libpng.so
+ln -sf libpng16.la libpng.la )
+}