Build problem: APK not produced, "Nothing to pre compile!"

I compiled my application, and it used to work fine. When I build normally it creates an APK file in the bin folder. Now, nothing.

[2010-11-30 12:06:58 - MyProject] Removing generated java classes.
[2010-11-30 12:06:58 - MyProject] Refreshing resource folders.
[2010-11-30 12:06:58 - MyProject] Starting full Pre Compiler.
[2010-11-30 12:06:58 - MyProject] Removing generated java classes.
[2010-11-30 12:06:58 - MyProject] Preparing generated java files for update/creation.
[2010-11-30 12:06:58 - MyProject] C:\dev\android-sdk-windows\platforms\android-4\tools\aapt.exe package -m -v -J C:\svn\MyProject\gen -M C:\svn\MyProject\AndroidManifest.xml -S C:\svn\MyProject\res -I C:\dev\android-sdk-windows\platforms\android-4\android.jar 
[2010-11-30 12:06:58 - MyProject] Locale/Vendor pairs:
[2010-11-30 12:06:58 - MyProject]    /
[2010-11-30 12:06:58 - MyProject]    /
[2010-11-30 12:06:58 - MyProject]    /
[2010-11-30 12:06:58 - MyProject]    /
[2010-11-30 12:06:58 - MyProject] 
[2010-11-30 12:06:58 - MyProject] Files:
... truncated ...
[2010-11-30 12:06:58 - MyProject]       Src: C:\svn\MyProject\res\values\strings.xml
[2010-11-30 12:06:58 - MyProject]   xml\settings.xml
[2010-11-30 12:06:58 - MyProject]       Src: C:\svn\MyProject\res\xml\settings.xml
[2010-11-30 12:06:58 - MyProject]   AndroidManifest.xml
[2010-11-30 12:06:58 - MyProject]       Src: C:\svn\MyProject\AndroidManifest.xml
[2010-11-30 12:06:58 - MyProject] Including resources from package: C:\dev\android-sdk-windows\platforms\android-4\android.jar
[2010-11-30 12:06:58 - 开发者_开发知识库MyProject] applyFileOverlay for drawable
[2010-11-30 12:06:58 - MyProject] applyFileOverlay for layout
[2010-11-30 12:06:58 - MyProject] applyFileOverlay for anim
[2010-11-30 12:06:58 - MyProject] applyFileOverlay for xml
[2010-11-30 12:06:58 - MyProject] applyFileOverlay for raw
[2010-11-30 12:06:58 - MyProject] applyFileOverlay for color
[2010-11-30 12:06:58 - MyProject] applyFileOverlay for menu
... truncated ...
[2010-11-30 12:06:58 - MyProject]   Writing symbols for class R.
[2010-11-30 12:06:58 - MyProject] Nothing to pre compile!
[2010-11-30 12:07:00 - MyProject] Refreshing resource folders.
[2010-11-30 12:07:00 - MyProject] Starting incremental Pre Compiler: Checking resource changes.
[2010-11-30 12:07:00 - MyProject] Nothing to pre compile!

Everything seems fine until the last line. Verbose is turned on.

Any idea what's wrong??

Thanks.

Deleting the project then cleaning, and reimporting it, fixed the problem.

This happened to me in conjunction with the issue where R as in R.drawable.* is not recognized. I fixed it by removing the following import and cleaning my project.

import android.R;

Hopefully, that solves your issue too.