diff --git a/add-to-export-sh.txt b/add-to-export-sh.txt
index 48199a3..ecf732b 100644
--- a/add-to-export-sh.txt
+++ b/add-to-export-sh.txt
@@ -8,6 +8,14 @@
 
 echo "\n=======CUSTOM=======\n"
 
+if [ -z $ESPIDF_INSTALLDIR ]; then
+    echo "\nFAIL: ESPIDF_INSTALLDIR environment variable not found!\nReinstall via script or manually add to ~/.zshrc\n"
+    exit
+fi
+
+binDir="${ESPIDF_INSTALLDIR}/.custom_bin"
+
+
 echo "TTY devices found in dmesg:"
 COUNTER=0
 devarr=()
@@ -37,9 +45,7 @@ echo "ESPTARGET = ${ESPTARGET}"
 
 echo "ESPIDF_INSTALLDR=${ESPIDF_INSTALLDIR}"
 
-binDir="${ESPIDF_INSTALLDIR}/.custom_bin"
-
-echo "binDir=${binDir}"
+echo "binDir = ${binDir}"
 
 echo "Setting alias"
 alias changeport="source ${binDir}/changeport.sh"
diff --git a/version.txt b/version.txt
index 75df2fd..3201c65 100644
--- a/version.txt
+++ b/version.txt
@@ -1 +1 @@
-60-dev.9
\ No newline at end of file
+60-dev.10
\ No newline at end of file