First try clicking the Designer button, then click back to the Blocks button. I received the message "We detected errors while reading in your project" when starting App Inventor or Switching Projects. If this is a problem for you due to wifi or other issues, follow these instructions:. Apps with multiple screens must be packaged and sent to the phone to test. I'm using the emulator and it says that my Companion is out of date. Some people have observed a problem where the app runs on the emulator, but images do not appear.
If an app installed on your Android device is crashing, or won't open, respond, or work properly, try the troubleshooting steps below. If a Google app that came with your device seems to have problems, those problems could be caused by another app later downloaded to your device. They may help if: You can't download or install apps or games from the Google Play Store You can't If these steps don't work, see other troubleshooting steps.
Follow these five steps to troubleshoot any Google Apps-related issue.
This message means that App Inventor believes it's connected to the emulator, but it is getting no response from the AI Companion software that should be running there. If your project gets this error, first check for issues like the two listed above. My app runs on the emulator, but images do not appear. They may have scrolled off the window.
Try moving the scroll bars.
You'll see your app in its full glory only after you've packaged and downloaded it, not while you're developing the app live.
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|Use the App Inventor Designer Window to download the app to your computer.
Perhaps the phone was unplugged?
The AI Companion should be compatible with Android operating system version 2. The Companion started to run, and then said "Connection error. If that is not the problem ask for help in the forum, and include the name of your project. I was using the emulator and now I can't use the USB cable. The browser may have loaded a new project without the Companion recognizing that.
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Google Play Troubleshooter. We've all experienced a Google Play Store problem at some point. Whether it's an error message when downloading apps, the Play Store. Even the most experienced developer rarely writes code correctly on the first try, making troubleshooting an important part of the development.
Make sure that other choices are not selected.
The Blocks Editor won't connect to the phone or media files don't show up on the phone. See the Windows driver installation instructions for advice, and check the App Inventor Forum to see if others have had similar issues with the version of Windows and the particular device you are using. See information on media in App Inventor.
The system cannot find the path specified. Perhaps it is not really an image file:
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|You'll need to allow "apps for everyone" on your account in order to see the Companion in the Play Store.
Then try connecting to the emulator again.
Video: Google app troubleshooting What to do if Google play store is not working in your android device
App Inventor should resume connecting automatically. Follow the instructions carefully, including the steps of rebooting and uninstalling. However, you might run into a situation where you need to know about app signing if you move between different App Inventor services and you want to reinstall an application that was built on a different service while still preserving its local data.