My Android apk was developed by XE7. Now I upgrade the project with XE8.
The IDE report a signing certificate error when install the apk to Android device:
Unable to create process: Unable to install
- Manually uninstall the previously-installed application from your Android device.
- Configure RAD Studio to perform a clean install every time that you run your application.
can you try
Project -> Options -> Provisioning -> New Keystore