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--- a/README.md
+++ b/README.md
@@ -48,9 +48,23 @@ cordova emulate android
 
 ```
 
-Remember: If you upgrade cordova or change the package name of the app (in config.xml),
+### Troubleshooting Android platform builds
+* If you upgrade cordova or change the package name of the app (in config.xml),
 you should reset the platform, using `cordova platform remove android` and then `cordova platform add android`
 
+#### Error message when starting the Android emulator
+(When running `cordova emulate android`)
+
+```
+Command failed with exit code 1: apkanalyzer manifest target-sdk /home/[...]/vipsobservationapp/platforms/android/app/build/outputs/apk/debug/app-debug.apk
+Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
+```
+
+This can be solved by installing the Android command-line tools, as [per these instructions](https://stackoverflow.com/questions/46402772/failed-to-install-android-sdk-java-lang-noclassdeffounderror-javax-xml-bind-a), see screen shot below:
+
+![How to install Android CLI tools](./document/images/android_sdk_cli_tools.png "How to install Android CLI tools")
+
+
 
 ### Connecting to a local server
 While developing, you will want to connect to a local instance of VIPSLogic. This is done by editing the property `CONST_URL_DOMAIN` in `/src/components/CommonUtilLocal.vue`. Set it to whatever domain name you wish (e.g. vipslogic-local.no) and then edit your `/etc/hosts` file to point this to the IP address 10.0.2.2, like this
diff --git a/document/images/android_sdk_cli_tools.png b/document/images/android_sdk_cli_tools.png
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