eclipse - Failed to load properties file for android project -

I was finally able to create and debug the Android platform. I imported my project into eclipse, and later installed it. Then I changed my imported project into the Android project ( Android device -> the Converter to Android project ). And now I have failed to load the property file for the project 'droid-platform' error session data:

  eclipse.buildId = M20100211-1343 java.version = 1.5.0_18 java.vendor = Sun Microsystems Inc. BootLoader constants: OS = linux, ARCH = x86, WS = gtk, nl = ru_ua command line arguments: -x linux -s gtk-arc x86  

Do anyone know, I How to deal with this?

In the project error, use the contextual menu on "Android Tools" -> "Fix Project Properties", I also tried "Refresh (F5)".