Unable to build: the file dx.jar was not loaded from the SDK folder!

Unknown error: Unable to build: the file dx.jar was not loaded from the SDK folder! 问题的缺失文件 eclipse.buildId=M20100211-1343 java.version=1.6.0_10-rc2 java.vendor=Sun Microsystems Inc. BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=zh_CN Command-line arguments: -os win32 -ws win32 -arch x86 Error Fri Mar 11 10:26:49 CST 2011 Unknown error: Unable to build: the file dx.jar was not loaded from the SDK folder! 出现这样的错误，可能是没安装好sdk，可以修正一下，尤其是离线安装，有可能导致。确保dx.jar这个文件在platform-tools\lib和选择的开发版本lib中的文件一致就可以