diff --git a/bin/erl_build.sh b/bin/erl_build.sh
index fcaa27d..1cb6ee1 100755
--- a/bin/erl_build.sh
+++ b/bin/erl_build.sh
@@ -7,7 +7,7 @@
 echo DONE. | tee -a $ERL_TOP/build_release.txt
 
 ./otp_build installer_win32  2>&1 | tee $ERL_TOP/build_installer_win32.txt
-mkdir $RELAX/release
+mkdir $RELAX/release > /dev/null 2>&1
 mv --force $ERL_TOP/release/win32/otp_win32_R*.exe $RELAX/release/  2>&1 | tee -a $ERL_TOP/build_installer_win32.txt
 
 rm $ERL_TOP/release/win32/vcredist_x86.exe
diff --git a/bin/shell.cmd b/bin/shell.cmd
index 6d32917..df050e7 100755
--- a/bin/shell.cmd
+++ b/bin/shell.cmd
@@ -44,31 +44,27 @@
 ::check which version of erlang setup we want
 :: choice.exe exists on all windows platforms since MSDOS but not on XP
 echo select:
-echo       3 for R14b03
+echo       3 for R15b03-1
 echo       4 for R14b04
-echo       5 for R15B
+echo       A for R16A
+echo       B for R16B
 echo       1 for R15b01
 set /p choice=or 0 to exit to the shell.
 :: then get to unix goodness as fast as possible
 if /i "%choice%"=="0" goto win_shell
 ::::if /i "%choice%"=="2" goto R......
-if /i "%choice%"=="3" goto R14B03
+if /i "%choice%"=="3" goto R15B03-1
 if /i "%choice%"=="4" goto R14B04
-if /i "%choice%"=="5" goto R15B
+if /i "%choice%"=="A" goto R16A
+if /i "%choice%"=="B" goto R16B
 if /i "%choice%"=="1" goto R15B01
 :: else
 goto eof
 
 ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
-:R14B03
-set ERTS_VSN=5.8.4
-set OTP_REL=R14B03
-goto unix_shell
-
-::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
-:R15B
-set ERTS_VSN=5.9
-set OTP_REL=R15B
+:R15B03-1
+set ERTS_VSN=5.9.3
+set OTP_REL=R15B03
 goto unix_shell
 
 ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
diff --git a/bin/shell.sh b/bin/shell.sh
index 228029b..90fce01 100755
--- a/bin/shell.sh
+++ b/bin/shell.sh
@@ -81,7 +81,7 @@
 echo $PATH | /bin/sed 's/:/\n/g'
 echo
 echo please check the toolkit paths point to Microsoft versions:
-which mc; which lc; which cl; which link; which mt
+which mc lc cl link mt rc
 echo
 
 echo Ready to build Erlang and CouchDB using Erlang $ERTS_VSN OTP $OTP_VER in $ERL_TOP