- Are you using a Binary or Source version of the engine?
- Can I see your Android SDK Settings?
- Can you package all other platforms?
- Can you launch onto your device?
Do you have everything installed for UE4 if you’re on the Binary version? If you’re not sure, you can check by pressing the black arrow beside launch from the launcher and clicking on options. Select everything and apply the changes.
Looking forward to hearing back from you, thanks!