As per the release notes for the latest release 8.6.6 of Uniform Server released yesterday, the International support plug-in is supposed to be 8.4.7. Which is not available for download on the sourceforge page.    Please refer note-4 on this link.  8.6.6 release note   it tells to download the same from intl plugin   but the download page does not contain the referred plug-in   Please provide ASAP