diff --git a/README.md b/README.md
index 9602ef4..05e4413 100644
--- a/README.md
+++ b/README.md
@@ -4,12 +4,12 @@ An Electron-based application capable of configuring the functionality of the Au
 For more details on the device itself, visit [www.openacousticdevices.info](http://www.openacousticdevices.info).
 
 ### Usage ###
-Once the repository has been cloned, install all required dependencies with:
+Once the repository has been cloned, you must either have electron-builder installed globally, or get it for the app specifically by running:
 ```
 npm install
 ```
 
-From then onwards, start the application with:
+From then onwards, or if you already had electron-builder installed, start the application with:
 ```
 npm run start 
 ```
diff --git a/main.js b/main.js
index 60af307..73b0ea9 100644
--- a/main.js
+++ b/main.js
@@ -27,6 +27,7 @@ const iconLocation = (process.platform === 'linux') ? '/build/icon.png' : '/buil
 const standardWindowSettings = {
     resizable: false,
     fullscreenable: false,
+    minimizable: false,
     autoHideMenuBar: true,
     icon: path.join(__dirname, iconLocation),
     useContentSize: true,
diff --git a/package.json b/package.json
index f31cbc5..8c51538 100755
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "AudioMoth-Config",
-  "version": "1.11.0",
+  "version": "1.11.1",
   "description": "The configuration app for the AudioMoth acoustic monitoring device.",
   "main": "main.js",
   "author": "openacousticdevices.info",
diff --git a/uiIndex.js b/uiIndex.js
index 2280868..154f97b 100644
--- a/uiIndex.js
+++ b/uiIndex.js
@@ -1538,7 +1538,7 @@ configureButton.addEventListener('click', () => {
 
             let message = 'The ';
             message += sunDefinitionIndex === constants.SUNRISE_AND_SUNSET ? 'sunrise and sunset' : 'dawn and dusk';
-            message += ' recording periods have zero duration. This means the AudioMoth will not record when in CUSTOM mode.';
+            message += ' recording periods have zero duration. Extend both intervals to configure.';
 
             dialog.showMessageBoxSync({
                 type: 'error',
@@ -1552,11 +1552,13 @@ configureButton.addEventListener('click', () => {
 
         }
 
-        if ((sunMode === constants.MODE_BEFORE_SUNRISE_AFTER_SUNRISE || sunMode === constants.MODE_BEFORE_BOTH_AFTER_BOTH) && noSunrise) {
+        if (sunMode === constants.MODE_BEFORE_SUNRISE_AFTER_SUNRISE && noSunrise) {
 
             let message = 'The ';
             message += sunDefinitionIndex === constants.SUNRISE_AND_SUNSET ? 'sunrise' : 'dawn';
-            message += ' recording period has zero duration. This means the AudioMoth will not record around sunrise when in CUSTOM mode.';
+            message += ' recording period has zero duration. Extend the ';
+            message += sunDefinitionIndex === constants.SUNRISE_AND_SUNSET ? 'sunrise' : 'dawn';
+            message += ' interval to configure.';
 
             dialog.showMessageBoxSync({
                 type: 'error',
@@ -1570,11 +1572,95 @@ configureButton.addEventListener('click', () => {
 
         }
 
-        if ((sunMode === constants.MODE_BEFORE_SUNSET_AFTER_SUNSET || sunMode === constants.MODE_BEFORE_BOTH_AFTER_BOTH) && noSunset) {
+        if (sunMode === constants.MODE_BEFORE_SUNSET_AFTER_SUNSET && noSunset) {
 
             let message = 'The ';
             message += sunDefinitionIndex === constants.SUNRISE_AND_SUNSET ? 'sunset' : 'dusk';
-            message += ' recording period has zero duration. This means the AudioMoth will not record around sunrise when in CUSTOM mode.';
+            message += ' recording period has zero duration. Extend the ';
+            message += sunDefinitionIndex === constants.SUNRISE_AND_SUNSET ? 'sunset' : 'dusk';
+            message += ' interval to configure.';
+
+            dialog.showMessageBoxSync({
+                type: 'error',
+                title: 'No recording periods',
+                message
+            });
+
+            console.log('Configuration cancelled');
+
+            return;
+
+        }
+
+        if (sunMode === constants.MODE_BEFORE_BOTH_AFTER_BOTH && noSunrise) {
+
+            let message = 'The ';
+            message += sunDefinitionIndex === constants.SUNRISE_AND_SUNSET ? 'sunrise' : 'dawn';
+            message += ' recording period has zero duration. Switch to "';
+            switch (sunDefinitionIndex) {
+
+            case constants.SUNRISE_AND_SUNSET:
+                message += 'Sunset';
+                break;
+
+            case constants.CIVIL_DAWN_AND_DUSK:
+                message += 'Civil Dusk';
+                break;
+
+            case constants.NAUTICAL_DAWN_AND_DUSK:
+                message += 'Nautical Dusk';
+                break;
+
+            case constants.ASTRONOMICAL_DAWN_AND_DUSK:
+                message += 'Astro Dusk';
+                break;
+
+            }
+
+            message += '" recording mode or extend the ';
+            message += sunDefinitionIndex === constants.SUNRISE_AND_SUNSET ? 'sunrise' : 'dawn';
+            message += ' interval to configure.';
+
+            dialog.showMessageBoxSync({
+                type: 'error',
+                title: 'No recording periods',
+                message
+            });
+
+            console.log('Configuration cancelled');
+
+            return;
+
+        }
+
+        if (sunMode === constants.MODE_BEFORE_BOTH_AFTER_BOTH && noSunset) {
+
+            let message = 'The ';
+            message += sunDefinitionIndex === constants.SUNRISE_AND_SUNSET ? 'sunset' : 'dusk';
+            message += ' recording period has zero duration. Switch to "';
+            switch (sunDefinitionIndex) {
+
+            case constants.SUNRISE_AND_SUNSET:
+                message += 'Sunrise';
+                break;
+
+            case constants.CIVIL_DAWN_AND_DUSK:
+                message += 'Civil Dawn';
+                break;
+
+            case constants.NAUTICAL_DAWN_AND_DUSK:
+                message += 'Nautical Dawn';
+                break;
+
+            case constants.ASTRONOMICAL_DAWN_AND_DUSK:
+                message += 'Astro Dawn';
+                break;
+
+            }
+
+            message += '" recording mode or extend the ';
+            message += sunDefinitionIndex === constants.SUNRISE_AND_SUNSET ? 'sunset' : 'dusk';
+            message += ' interval to configure.';
 
             dialog.showMessageBoxSync({
                 type: 'error',
@@ -1590,16 +1676,16 @@ configureButton.addEventListener('click', () => {
 
         if (sunRecordingPeriods.length === 0) {
 
-            let messageText = sunDefinitionIndex === constants.SUNRISE_AND_SUNSET ? 'Sunrise and sunset ' : 'Dawn and dusk';
-            messageText += 'calculation shows no recording periods for the ';
-            messageText += firstRecordingDateCheckbox.checked ? 'selected first recording date. ' : 'current date. ';
-            messageText += 'This means the AudioMoth may not record when in CUSTOM mode. Are you sure you wish to apply this configuration?';
+            let message = sunDefinitionIndex === constants.SUNRISE_AND_SUNSET ? 'Sunrise and sunset' : 'Dawn and dusk';
+            message += ' calculation shows no recording periods for the ';
+            message += firstRecordingDateCheckbox.checked ? 'selected first recording date' : 'current date';
+            message += '. This means the AudioMoth may not record when in CUSTOM mode. Are you sure you wish to apply this configuration?';
 
             const buttonIndex = dialog.showMessageBoxSync({
                 type: 'warning',
                 buttons: ['Yes', 'No'],
                 title: 'No recording periods',
-                message: messageText
+                message
             });
 
             if (buttonIndex === 1) {