Ok I am having a problem. After I create the program and run it I get the splash screen. I click on the splash screen, it goes away and I push the button with my mouse. I get the dialog box that says "Hello world". I then click on the mode menu "Design". I get this error box as below. What is Exception 5? When I goto the hello folder on my computer I have the APK file. I sideload this to a directory on my phone called downloads. I use an app on my phone called File Manager. When I navigate to the download directory on my phone and select hello.apk, it asks me if I want to install, so I install and then run the app. All I get is a small rectangle in the upper left of my phone with a very tiny button. In essence, the image of the screen in HAC. I can't make it bigger and when I "push" it nothing happens. I built an app using the MIT appinventor and sideloaded it from my computer and it worked fine so I know this method works. Using appinventor is alright but you can't make any serious apps. The method is so juvenile.