我使用新的SDK工具（修订版23）更新了Eclipse，但是现在当Eclipse启动时，我收到以下错误消息：

此Android SDK需要Android Developer Toolkit版本23.0.0或更高版本。当前版本是22.6.3.v201404151837-1123206。请更新ADT为最新版本。

找不到与“检查更新”有关的更新。如果我尝试“安装新软件”，则可以看到版本23，但由于以下错误而无法升级：

Cannot complete the install because of a conflicting dependency.
Software being installed: Android Development Tools 23.0.0.1245622 (com.android.ide.eclipse.adt.feature.feature.group 23.0.0.1245622)
Software currently installed: Android Developer Tools 22.2.1.v201309180102-833290 (com.android.ide.eclipse.adt.package.product 22.2.1.v201309180102-833290)
Only one of the following can be installed at once: 
    ADT Package 22.6.3.v201404151837-1123206 (com.android.ide.eclipse.adt.package 22.6.3.v201404151837-1123206)
    ADT Package 23.0.0.1245622 (com.android.ide.eclipse.adt.package 23.0.0.1245622)
Cannot satisfy dependency:
    From: Android Development Tools 23.0.0.1245622 (com.android.ide.eclipse.adt.feature.feature.group 23.0.0.1245622)
    To: com.android.ide.eclipse.adt.package [23.0.0.1245622]
Cannot satisfy dependency:
    From: Android Development Tools 22.6.3.v201404151837-1123206 (com.android.ide.eclipse.adt.feature.group 22.6.3.v201404151837-1123206)
    To: com.android.ide.eclipse.adt.package [22.6.3.v201404151837-1123206]
Cannot satisfy dependency:
    From: ADT Package 22.2.1.v201309180102-833290 (com.android.ide.eclipse.adt.package.feature.group 22.2.1.v201309180102-833290)
    To: com.android.ide.eclipse.adt.feature.group 22.2.0
Cannot satisfy dependency:
    From: Android Developer Tools 22.2.1.v201309180102-833290 (com.android.ide.eclipse.adt.package.product 22.2.1.v201309180102-833290)
    To: com.android.ide.eclipse.adt.package.feature.group [22.2.1.v201309180102-833290]

从网站上下载了最新的ADT之后，似乎还有另一个问题。

使用SDK工具版本。23未安装proguard，dir/tools/proguard缺少文件夹SDK ，并且缺少其他工具。这个版本包含几个错误。