ENVI 5.0 and OS X 10.8 installation

ENVI 5.0 requires additional packages not included in OS X 10.8 Mountain Lion. 
 Java – ENVI has required Java for years. The ENVI installer will prompt the user and download it as part of ENVI 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 
 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/ ENVI - IDL -object-graphics-can-fail-or-crash- ENV - IDL -on-Mac-OS-X-10-8-using-XQuartz-2-7-2.aspx