TIBCO ActiveMatrix® Adapter for Files for Unix/Win requires the following 32-bit and 64-bit packages.
Required Packages( (libXau, libxcb, libXext, libX11, libXp, libICE, libuuid, libSM, libXt, libXmu, libXi, libXts, libXrender, freetype, expat, fontconfig, libXft, compat-libstdc++).
If the packages are not installed then install the above required packages for both 32-bit and 64-bit and then try installing TIBCO ActiveMatrix® Adapter for Files for Unix/Win on RedHat Linux 6.x (64-bit).