solve envi 4.1 segmentation fault

If ENVI 4.1 crashes with segmentation fault then find a old libX11.so.6 file from a working
version and copy it to the directory of your choice and specify this path to LD_LIBRARY_PATH:
export LD_LIBRARY_PATH="/usr/local/lib/private_lib"
export LD_PRELOAD_PATH="/usr/local/lib/private_lib"

then start ENVI and...works