diff --git a/challenger/Procfile b/challenger/Procfile
index 6910c2df..a771bb7c 100644
--- a/challenger/Procfile
+++ b/challenger/Procfile
@@ -1 +1 @@
-web: java $JAVA_OPTS -cp target/classes:target/dependency/*:target/* uk.co.compendiumdev.challenge.ChallengeMain  -model=challengeapi -noshutdown -autocleardown=10 -multiplayer -cloudstorage
+web: java $JAVA_OPTS -cp target/classes:target/dependency/*:target/* uk.co.compendiumdev.challenge.ChallengeMain  -model=challengeapi -noshutdown -multiplayer -cloudstorage
diff --git a/challenger/deploy.txt b/challenger/deploy.txt
index 05c800f9..17781299 100644
--- a/challenger/deploy.txt
+++ b/challenger/deploy.txt
@@ -14,6 +14,8 @@ i.e. https://medium.com/@devkosal/switching-java-jdk-versions-on-macos-80bc868e6
 
 For heroku:
 
+NOTE: need to have `heroku plugins:install java` for the `deploy:jar` to be recognised - more info https://devcenter.heroku.com/articles/deploying-executable-jar-files
+
 Deploy the challenger app full jar
 
 - have the deployment page open in case we need to rollback
diff --git a/challenger/src/main/java/uk/co/compendiumdev/challenge/gui/ChallengerWebGUI.java b/challenger/src/main/java/uk/co/compendiumdev/challenge/gui/ChallengerWebGUI.java
index fa46cf6e..d98afe3b 100644
--- a/challenger/src/main/java/uk/co/compendiumdev/challenge/gui/ChallengerWebGUI.java
+++ b/challenger/src/main/java/uk/co/compendiumdev/challenge/gui/ChallengerWebGUI.java
@@ -279,7 +279,8 @@ private String showPreviousGuids() {
                 "var guids = localStorage.getItem('challenges-guids') || '';" +
                 "var guidsArray = guids.match(/\\|([^|]*)\\|/g);" +
                 "currGuid = getCookie('X-THINGIFIER-DATABASE-NAME');" +
-                "if(currGuid!='' && !guidsArray.includes(`|${currGuid}|`)){guidsArray.push(`|${currGuid}|`)}" +
+                "if(currGuid && !guidsArray){guidsArray=[];}" +
+                "if(currGuid && guidsArray && currGuid!='' && !guidsArray.includes(`|${currGuid}|`)){guidsArray.push(`|${currGuid}|`)}" +
                 "if(guidsArray!=null && guidsArray.length>0){document.writeln('<p><strong>Previously Used</strong></p>')}" +
                 "for(guidItem in guidsArray){" +
                 "var myguid = guidsArray[guidItem].replace(/\\|/g,'');" +
diff --git a/challengerAuto/pom.xml b/challengerAuto/pom.xml
index 07ce254a..2a9252f1 100644
--- a/challengerAuto/pom.xml
+++ b/challengerAuto/pom.xml
@@ -20,7 +20,7 @@
         <dependency>
             <groupId>uk.co.compendiumdev.thingifier</groupId>
             <artifactId>challenger</artifactId>
-            <version>1.1.0-SNAPSHOT</version>
+            <version>1.1.0</version>
             <scope>test</scope>
         </dependency>