hi,
I did include text label and radio boxes in my emulator but nothing is displayed in my hello world program. I have got fellowing messages:

[2012-02-08 17:43:16 - Hello] ------------------------------
[2012-02-08 17:43:16 - Hello] Android Launch!
[2012-02-08 17:43:16 - Hello] adb is running normally.
[2012-02-08 17:43:16 - Hello] Performing com.Andriod.hello.HelloActivity activity launch
[2012-02-08 17:43:16 - Hello] Automatic Target Mode: launching new emulator with compatible AVD 'hello'
[2012-02-08 17:43:16 - Hello] Launching a new emulator with Virtual Device 'hello'
[2012-02-08 17:43:20 - Emulator] emulator: WARNING: Unable to create sensors port: Unknown error
[2012-02-08 17:43:20 - Hello] New emulator found: emulator-5554
[2012-02-08 17:43:20 - Hello] Waiting for HOME ('android.process.acore') to be launched...
[2012-02-08 17:43:44 - Hello] emulator-5554 disconnected! Cancelling 'com.Andriod.hello.HelloActivity activity launch'!

I had the same problem and it helped to increase SD volume and max VM app heap size. (Android SDK and AVD manager - Virtual device - Edit) What is interesting, the back change of SD and heap to the previous values is OK, too. That means, that any change of emulator parameters and its rebuilding is enough. (Simple restart won't help)