Android Build Problem

Hi I am a new programmer using the Corona Simulator. I have just created a test application for my phone. However, after building it and transferring it into my phone and clicking the download, it loads and then states that it failed to download. I have tried both ways of transferring it to my SD Card and using dropbox, both ineffective. What seems to be the problem?

I am using an Xperia Play, with Android Gingerbread 2.3.
This is what I input in the Andriod Build:
Applicaton Name: Fruit Samurai
Version: 1
Package: com.myDomain.fruit_samurai
Target OS Compatibillity: Android 2.2
Save to folder: (The Desktop) [import]uid: 100418 topic_id: 18704 reply_id: 318704[/import]

Using an USB cable and doing standard USB drag & drop transfer to the Sd card should work all the time and then you can install the app by some tool like Onymous or similar apps. Also, have you enabled ‘Unknown Sources’ that let you install non market apps? You find it in Settings -> Applications [import]uid: 53069 topic_id: 18704 reply_id: 71892[/import]

Yes, I have allowed unknown applications to be downloaded on my phone and I have tried onymous and other application installers but the same thing happens: it just loads and declares application not installed. And I have no idea why. [import]uid: 100418 topic_id: 18704 reply_id: 72343[/import]