diff --git a/build.sh b/build.sh
index 1410e39..aacfc67 100755
--- a/build.sh
+++ b/build.sh
@@ -1,6 +1,20 @@
 #!/bin/sh
 
+# check we have all dependencies
+
+echo "Checking dependencies..."
+
+if ! which uxnasm || ! which uxnemu || ! which crystal || ! which mseq ; then
+  echo "dependencies are not met - we need:"
+  echo "- uxnasm"
+  echo "- uxnemu"
+  echo "- crystal"
+  echo "- mblaze"
+  exit 1
+fi
+
 # build config into crystal constants
+
 echo "Generating config.cr"
 
 . ./config
@@ -15,12 +29,8 @@ READER_PROG = "${READER_PROG}"
 COMPOSE_PROG = "${COMPOSE_PROG}"
 END
 
-if ! which ${UXN_EMU}; then
-  echo "${UXN_EMU} is not in PATH! Beware..."
-  sleep 1
-fi
-
 # build
+
 echo "Building taro-ls"
 uxnasm taro-ls.tal taro-ls
 echo "Building taro-ctl"
@@ -28,16 +38,21 @@ crystal build --release --no-debug -s taro-ctl.cr
 
 # setup TARO_LIB
 
-if [ ${TARO_LIB} != ${PWD} ]; then
-  mkdir -p ${TARO_LIB}
-  for x in "taro-ls taro-reader lesskey .theme font.icn taro-ctl taro.svg"; do
+if [ "${TARO_LIB}" != "${PWD}" ]; then
+  mkdir -p "${TARO_LIB}"
+  for x in taro-ls taro-reader lesskey .theme font.icn taro-ctl taro.svg; do
     if [ -e ${x} ]; then
-      cp ${x} ${TARO_LIB}
+      cp ${x} "${TARO_LIB}"
     fi
   done
-  echo "TARO_LIB is in ${TARO_LIB}; add it to your PATH or you can just copy taro-ctl there."
+  echo "TARO_LIB is in ${TARO_LIB}; you can either"
+  echo "- add it to your PATH"
+  echo "- or copy taro-ctl into your PATH"
 fi
+cp "$(which uxnemu)" "${TARO_LIB}/${UXN_EMU}"
+
+# optionally, fill out desktopfile with proper variables and install it
 
 if [ "$1" = "desktopfile" ]; then
   sed -e "s#TARO_LIB#${TARO_LIB}#g" -e "s#UXN_EMU#${UXN_EMU}#g" taro.desktop > ~/.local/share/applications/taro.desktop
-fi
\ No newline at end of file
+fi
diff --git a/config b/config
index e54d7e3..2fdd252 100644
--- a/config
+++ b/config
@@ -1,16 +1,16 @@
 # where your maildir folders live
 MBOX_ROOT=${HOME}/lib/mail/zoho
-# where runtime files live (probably this git repo for simplicity)
-TARO_LIB=${PWD}
+# where runtime files live 
+TARO_LIB=${HOME}/lib/taro
 # where attachments are saved to
 TARO_DOWNLOADS=${HOME}/tmp
 
-# name of your uxnemu executable; it must be in PATH; i copy mine to "taro" so it gets the _NET_WM_CLASS=taro - there may be a better way to do this in the future
+# uxnemu will be copied to TARO_LIB/UXN_EMU to give it the right _NET_WM_CLASS
 UXN_EMU=taro
 
 # any custom env you want to set for reader/compose wins
 TARO_ENV="PINENTRY_USER_DATA=taro"
 
 # reader and compose progs - I use st, you may use your own terminal although the command line options may differ so read the manual
-READER_PROG="${TARO_ENV} TARO_DOWNLOADS=${TARO_DOWNLOADS} LESSKEYIN=${TARO_LIB}/lesskey st -c taro -n taro -t taro-reader -e ${TARO_LIB}/taro-reader"
-COMPOSE_PROG="${TARO_ENV} st -c taro -n taro -t taro-compose -e mcom"
+READER_PROG="${TARO_ENV} TARO_DOWNLOADS=\\\"${TARO_DOWNLOADS}\\\" LESSKEYIN=\\\"${TARO_LIB}/lesskey\\\" st -c ${UXN_EMU} -n ${UXN_EMU} -t taro-reader -e \\\"${TARO_LIB}/taro-reader\\\""
+COMPOSE_PROG="${TARO_ENV} st -c ${UXN_EMU} -n ${UXN_EMU} -t taro-compose -e mcom"
diff --git a/taro-ctl.cr b/taro-ctl.cr
index 34f7886..2f93db7 100644
--- a/taro-ctl.cr
+++ b/taro-ctl.cr
@@ -81,14 +81,11 @@ module Taro
       @stdin_r, @stdin_w = IO.pipe
       @lifetime = Channel(UInt8).new
       
-      uxnrom : String = ""
-      
-      uxnargs = ["-s", "1", "#{TARO_LIB}/#{uxnrom}.rom"]
       case w
       when WinType::LIST then
         spawn do
           Process.run(
-            command: UXN_EMU,
+            command: "#{TARO_LIB}/#{UXN_EMU}",
             args: [ "-s", "1", "taro-ls" ],
             chdir: TARO_LIB, 
             input: @stdin_r, 
diff --git a/taro-ls.tal b/taro-ls.tal
index f607334..a232131 100644
--- a/taro-ls.tal
+++ b/taro-ls.tal
@@ -438,6 +438,8 @@ JMP2r
   &back
     STHk LB_SELECT_IDX LDZ2 #0000 NEQ2 ,&can_go_back JCN
       STHkr LB_LEN LDZ2 #0001 SUB2 STHkr LB_SELECT_IDX STZ2
+      ( if number of entries is less than height, don't scroll to bottom )
+      STHkr LB_LEN LDZ2 #0001 SUB2 #00 STHkr LB_HEIGHT LDZ LTH2 ,&end JCN
       STHkr LB_LEN LDZ2 #00 STHkr LB_HEIGHT LDZ SUB2 STHkr LB_TOP STZ2
       ,&end JMP
     &can_go_back