When I try to launch the help of ICEM CFD 10.0.1 on a linux64_amd system it fails with the message:
START HELP ENGINE
Platform = Linux
Help being launched for linux64_amd
Can't find Java help executable: /usr/local/ansysinc/v100/icemcfd/linux64_amd/lib/jre/linux64_amd/bin/java
Unable to start AI help system. Please check you help installation.
In the standart installation of ICEM CFD 10.0 with SP1 (also with additional SP2) there's only the directory
ln -s linux64 linux64_amd
will fix this issue.