When trying to add the LibreOffice SDK (Window > Preferences > LibreOffice Plugin > SDK Configuration > Add LibreOffice SDK configuration) nothing happens (or for a moment it shows the error "SDK version has to be at least 2.0.4").
The program is actually trying to find the file "uno_skeletonmaker.exe " while he "uno-skeletonmaker.exe"

A code snippet from the SDK.java, which is located in the package org.libreoffice.ide.eclipse.core.internal.model:

 String binName = getCommand("uno-skeletonmaker"); //$NON-NLS-1$
 if (!path.append(binName).toFile().exists()) {
       throw new InvalidConfigException(Messages.getString("SDK.MinSdkVersionError"), //$NON-NLS-1$
           InvalidConfigException.INVALID_SDK_HOME);
 }

...

public String getCommand(String command) {
    if (Platform.getOS().equals(Platform.OS_WIN32)) {
        command = command.replace('-', '_');
        command += ".exe"; //$NON-NLS-1$
    }
    return command;
}

Temporary solution:

When adding the SDK to the "pathToLibreOfficeSDK\sdk\bin" directory, rename "uno-skeletonmaker.exe" to "uno_skeletonmaker.exe".
After adding the SDK configuration, return it to its original state.