Android 2.1-update1 과 같이 떠야하는부분에
unable to get system library for the project
  라는 에러가 납니다

-Right click on the project which has issues and select properties
  • -Select the appropriate Android build (1.1, 1.5 or 1.5 with google api) and say ok
  • -Again right click on the project and select "Android Tools > Fix Project Properties"
  • -Fix the imports once (if required)
  • -Refresh the project and you should be ready to go without any manual editing
  • 이렇게 하라는해결방안을 찾아 해보았는데
    효과가 없네요..

    혹시 이런 오류사항 경험하시고 해결하신 분 .. 알려주세요ㅠㅠ!