The Eclipse/CDT version that SDK uses depends on XPCOM libraries from firefox 2.* or mozilla-seamonkey 1.*. These libraries are missing in RedHat EL 5.2 installation or from a Firefox 3.x installation.
To use SDK on this installation, perform the following:
1. Download and install the firefox 2.* or mozilla-seamonkey 1.* version. 2. Set the ENV variable MOZILLA_FIVE_HOME to your Firefox or Mozilla installation location (e.g., setenv MOZILLA_FIVE_HOME /usr/lib/firefox-2.0.0.8), or make the following change GRE_PATH=/usr/lib/firefox-2.0.0.8 in the /etc/gre.d/gre.conf file.