# ENVI 5.0 and OS X 10.8 installation

<span class="caps">ENVI</span> 5.0 requires additional packages not included in OS X 10.8 Mountain Lion.

Java – <span class="caps">ENVI</span> has required Java for years. The <span class="caps">ENVI</span> installer will prompt the user and download it as part of <span class="caps">ENVI</span> installation.

X11 – X11 is no longer included with Mountain Lion, but the installer will prompt the user to manually download X11 v2.7.2 or later from [http://xquartz.macosforge.org](http://xquartz.macosforge.org)

Installing X11 using the installer defaults seems to work for most users. v2.7.4 was tested and does seem to work.

Exelis compatibility notes:  
[http://www.exelisvis.com/Support/HelpArticleDetail/ArticleId/5294/](http://www.exelisvis.com/Support/HelpArticleDetail/ArticleId/5294/)<span class="caps">ENVI</span>-<span class="caps">IDL</span>-object-graphics-can-fail-or-crash-<span class="caps">ENV</span>-<span class="caps">IDL</span>-on-Mac-OS-X-10-8-using-XQuartz-2-7-2.aspx