[android-developers] Update project failed by android-tool r14 edition

I got r14 edition android tools, and try to update my project's
build.xml by command below.

E:\Codes\Android\Workspace\...>android -v update project -p .

This process failed with message below.

Warning: Ignoring platform 'android-2.0': build.prop is missing.
Updated local.properties
Exception in thread "main" java.lang.NullPointerException
at
com.android.sdklib.internal.project.ProjectProperties.parsePropertyFile(ProjectProperties.java:
385)
at
com.android.sdklib.internal.project.ProjectProperties.load(ProjectProperties.java:
229)
at
com.android.sdklib.internal.project.ProjectCreator.updateProject(ProjectCreator.java:
601)
at com.android.sdkmanager.Main.updateProject(Main.java:693)
at com.android.sdkmanager.Main.doAction(Main.java:273)
at com.android.sdkmanager.Main.run(Main.java:119)
at com.android.sdkmanager.Main.main(Main.java:102)

Please tell me how to fix it.

--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to android-developers@googlegroups.com
To unsubscribe from this group, send email to
android-developers+unsubscribe@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en