diff --git a/src/GPU/Install.sh b/src/GPU/Install.sh
index 0c9c8c3b92..fd76c7c98c 100644
--- a/src/GPU/Install.sh
+++ b/src/GPU/Install.sh
@@ -4,12 +4,14 @@
 
 if (test $1 = 1) then
 
-  sed -i -e 's/[^ \t]*gpu //' ../Makefile.package
-  sed -i -e 's/[^ \t]*gpu_[^ \t]*) //' ../Makefile.package
-  sed -i -e 's|^PKG_PATH =[ \t]*|&-L../../lib/gpu |' ../Makefile.package
-  sed -i -e 's|^PKG_LIB =[ \t]*|&-lgpu |' ../Makefile.package
-  sed -i -e 's|^PKG_SYSPATH =[ \t]*|&$(gpu_SYSPATH) |' ../Makefile.package
-  sed -i -e 's|^PKG_SYSLIB =[ \t]*|&$(gpu_SYSLIB) |' ../Makefile.package
+  if (test -e ../Makefile.package) then
+    sed -i -e 's/[^ \t]*gpu //' ../Makefile.package
+    sed -i -e 's/[^ \t]*gpu_[^ \t]*) //' ../Makefile.package
+    sed -i -e 's|^PKG_PATH =[ \t]*|&-L../../lib/gpu |' ../Makefile.package
+    sed -i -e 's|^PKG_LIB =[ \t]*|&-lgpu |' ../Makefile.package
+    sed -i -e 's|^PKG_SYSPATH =[ \t]*|&$(gpu_SYSPATH) |' ../Makefile.package
+    sed -i -e 's|^PKG_SYSLIB =[ \t]*|&$(gpu_SYSLIB) |' ../Makefile.package
+  fi
 
   if (test -e ../pair_gayberne.cpp) then
     cp pair_gayberne_gpu.cpp ..
@@ -21,8 +23,10 @@ if (test $1 = 1) then
 
 elif (test $1 = 0) then
 
-  sed -i -e 's/[^ \t]*gpu //' ../Makefile.package
-  sed -i -e 's/[^ \t]*gpu_[^ \t]*) //' ../Makefile.package
+  if (test -e ../Makefile.package) then
+    sed -i -e 's/[^ \t]*gpu //' ../Makefile.package
+    sed -i -e 's/[^ \t]*gpu_[^ \t]*) //' ../Makefile.package
+  fi
 
   rm ../pair_gayberne_gpu.cpp
   rm ../pair_lj_cut_gpu.cpp
diff --git a/src/MEAM/Install.sh b/src/MEAM/Install.sh
index b5e2ba8db6..e3c9d623f3 100644
--- a/src/MEAM/Install.sh
+++ b/src/MEAM/Install.sh
@@ -3,13 +3,15 @@
 
 if (test $1 = 1) then
 
-  sed -i -e 's/[^ \t]*meam //' ../Makefile.package
-  sed -i -e 's/[^ \t]*meam_[^ \t]*) //' ../Makefile.package
-  sed -i -e 's|^PKG_INC =[ \t]*|&-I../../lib/meam |' ../Makefile.package
-  sed -i -e 's|^PKG_PATH =[ \t]*|&-L../../lib/meam |' ../Makefile.package
-  sed -i -e 's|^PKG_LIB =[ \t]*|&-lmeam |' ../Makefile.package
-  sed -i -e 's|^PKG_SYSPATH =[ \t]*|&$(meam_SYSPATH) |' ../Makefile.package
-  sed -i -e 's|^PKG_SYSLIB =[ \t]*|&$(meam_SYSLIB) |' ../Makefile.package
+  if (test -e ../Makefile.package) then
+    sed -i -e 's/[^ \t]*meam //' ../Makefile.package
+    sed -i -e 's/[^ \t]*meam_[^ \t]*) //' ../Makefile.package
+    sed -i -e 's|^PKG_INC =[ \t]*|&-I../../lib/meam |' ../Makefile.package
+    sed -i -e 's|^PKG_PATH =[ \t]*|&-L../../lib/meam |' ../Makefile.package
+    sed -i -e 's|^PKG_LIB =[ \t]*|&-lmeam |' ../Makefile.package
+    sed -i -e 's|^PKG_SYSPATH =[ \t]*|&$(meam_SYSPATH) |' ../Makefile.package
+    sed -i -e 's|^PKG_SYSLIB =[ \t]*|&$(meam_SYSLIB) |' ../Makefile.package
+  fi
 
   cp pair_meam.cpp ..
 
@@ -17,8 +19,10 @@ if (test $1 = 1) then
 
 elif (test $1 = 0) then
 
-  sed -i -e 's/[^ \t]*meam //' ../Makefile.package
-  sed -i -e 's/[^ \t]*meam_[^ \t]*) //' ../Makefile.package
+  if (test -e ../Makefile.package) then
+    sed -i -e 's/[^ \t]*meam //' ../Makefile.package
+    sed -i -e 's/[^ \t]*meam_[^ \t]*) //' ../Makefile.package
+  fi
 
   rm ../pair_meam.cpp
 
diff --git a/src/POEMS/Install.sh b/src/POEMS/Install.sh
index 30b3f4823a..58a33048c7 100644
--- a/src/POEMS/Install.sh
+++ b/src/POEMS/Install.sh
@@ -3,10 +3,12 @@
 
 if (test $1 = 1) then
 
-  sed -i -e 's/[^ \t]*poems //' ../Makefile.package
-  sed -i -e 's|^PKG_INC =[ \t]*|&-I../../lib/poems |' ../Makefile.package
-  sed -i -e 's|^PKG_PATH =[ \t]*|&-L../../lib/poems |' ../Makefile.package
-  sed -i -e 's|^PKG_LIB =[ \t]*|&-lpoems |' ../Makefile.package
+  if (test -e ../Makefile.package) then
+    sed -i -e 's/[^ \t]*poems //' ../Makefile.package
+    sed -i -e 's|^PKG_INC =[ \t]*|&-I../../lib/poems |' ../Makefile.package
+    sed -i -e 's|^PKG_PATH =[ \t]*|&-L../../lib/poems |' ../Makefile.package
+    sed -i -e 's|^PKG_LIB =[ \t]*|&-lpoems |' ../Makefile.package
+  fi
 
   cp fix_poems.cpp ..
 
@@ -14,7 +16,9 @@ if (test $1 = 1) then
 
 elif (test $1 = 0) then
 
-  sed -i -e 's/[^ \t]*poems //' ../Makefile.package
+  if (test -e ../Makefile.package) then
+    sed -i -e 's/[^ \t]*poems //' ../Makefile.package
+  fi
 
   rm ../fix_poems.cpp
 
diff --git a/src/Package.sh b/src/Package.sh
index 01ce2ca591..14c0495b7e 100644
--- a/src/Package.sh
+++ b/src/Package.sh
@@ -22,7 +22,6 @@ done
 # issue warning if any package file is not in src or is different
 
 if (test $2 = "status") then
-
   if (test $installed = 1) then
     echo "Installed YES: package $1"
     for file in *.cpp *.h; do
@@ -83,8 +82,8 @@ elif (test $2 = "overwrite") then
 # re-install so Install.sh will edit Makefile.pacakge
 
 elif (test $2 = "regenerate") then
-
   if (test $installed = 1) then
     /bin/sh Install.sh 1
   fi
+
 fi
diff --git a/src/REAX/Install.sh b/src/REAX/Install.sh
index 4db0b0554b..bd56f798db 100644
--- a/src/REAX/Install.sh
+++ b/src/REAX/Install.sh
@@ -3,13 +3,15 @@
 
 if (test $1 = 1) then
 
-  sed -i -e 's/[^ \t]*reax //' ../Makefile.package
-  sed -i -e 's/[^ \t]*reax_[^ \t]*) //' ../Makefile.package
-  sed -i -e 's|^PKG_INC =[ \t]*|&-I../../lib/reax |' ../Makefile.package
-  sed -i -e 's|^PKG_PATH =[ \t]*|&-L../../lib/reax |' ../Makefile.package
-  sed -i -e 's|^PKG_LIB =[ \t]*|&-lreax |' ../Makefile.package
-  sed -i -e 's|^PKG_SYSPATH =[ \t]*|&$(reax_SYSPATH) |' ../Makefile.package
-  sed -i -e 's|^PKG_SYSLIB =[ \t]*|&$(reax_SYSLIB) |' ../Makefile.package
+  if (test -e ../Makefile.package) then
+    sed -i -e 's/[^ \t]*reax //' ../Makefile.package
+    sed -i -e 's/[^ \t]*reax_[^ \t]*) //' ../Makefile.package
+    sed -i -e 's|^PKG_INC =[ \t]*|&-I../../lib/reax |' ../Makefile.package
+    sed -i -e 's|^PKG_PATH =[ \t]*|&-L../../lib/reax |' ../Makefile.package
+    sed -i -e 's|^PKG_LIB =[ \t]*|&-lreax |' ../Makefile.package
+    sed -i -e 's|^PKG_SYSPATH =[ \t]*|&$(reax_SYSPATH) |' ../Makefile.package
+    sed -i -e 's|^PKG_SYSLIB =[ \t]*|&$(reax_SYSLIB) |' ../Makefile.package
+  fi
 
   cp pair_reax.cpp ..
   cp pair_reax.h ..
@@ -20,8 +22,10 @@ if (test $1 = 1) then
 
 elif (test $1 = 0) then
 
-  sed -i -e 's/[^ \t]*reax //' ../Makefile.package
-  sed -i -e 's/[^ \t]*reax_[^ \t]*) //' ../Makefile.package
+  if (test -e ../Makefile.package) then
+    sed -i -e 's/[^ \t]*reax //' ../Makefile.package
+    sed -i -e 's/[^ \t]*reax_[^ \t]*) //' ../Makefile.package
+  fi
 
   rm ../pair_reax.cpp
   rm ../pair_reax.h
diff --git a/src/USER-ATC/Install.sh b/src/USER-ATC/Install.sh
index e4a62c36d2..e55e1c7d65 100755
--- a/src/USER-ATC/Install.sh
+++ b/src/USER-ATC/Install.sh
@@ -3,21 +3,25 @@
 
 if (test $1 = 1) then
 
-  sed -i -e 's/[^ \t]*atc //' ../Makefile.package
-  sed -i -e 's/[^ \t]*atc_[^ \t]*) //' ../Makefile.package
-  sed -i -e 's|^PKG_INC =[ \t]*|&-I../../lib/atc |' ../Makefile.package
-  sed -i -e 's|^PKG_PATH =[ \t]*|&-L../../lib/atc |' ../Makefile.package
-  sed -i -e 's|^PKG_LIB =[ \t]*|&-latc |' ../Makefile.package
-  sed -i -e 's|^PKG_SYSPATH =[ \t]*|&$(user-atc_SYSPATH) |' ../Makefile.package
-  sed -i -e 's|^PKG_SYSLIB =[ \t]*|&$(user-atc_SYSLIB) |' ../Makefile.package
+  if (test -e ../Makefile.package) then
+    sed -i -e 's/[^ \t]*atc //' ../Makefile.package
+    sed -i -e 's/[^ \t]*atc_[^ \t]*) //' ../Makefile.package
+    sed -i -e 's|^PKG_INC =[ \t]*|&-I../../lib/atc |' ../Makefile.package
+    sed -i -e 's|^PKG_PATH =[ \t]*|&-L../../lib/atc |' ../Makefile.package
+    sed -i -e 's|^PKG_LIB =[ \t]*|&-latc |' ../Makefile.package
+    sed -i -e 's|^PKG_SYSPATH =[ \t]*|&$(user-atc_SYSPATH) |' ../Makefile.package
+    sed -i -e 's|^PKG_SYSLIB =[ \t]*|&$(user-atc_SYSLIB) |' ../Makefile.package
+  fi
 
   cp fix_atc.h ..
   cp fix_atc.cpp ..
 
 elif (test $1 = 0) then
 
-  sed -i -e 's/[^ \t]*atc //' ../Makefile.package
-  sed -i -e 's/[^ \t]*atc_[^ \t]*) //' ../Makefile.package
+  if (test -e ../Makefile.package) then
+    sed -i -e 's/[^ \t]*atc //' ../Makefile.package
+    sed -i -e 's/[^ \t]*atc_[^ \t]*) //' ../Makefile.package
+  fi
 
   rm ../fix_atc.h
   rm ../fix_atc.cpp