Neither 3D Analyst nor Spatial Analyst toolboxes show up in ArcToolbox even though the extensions are enabled. I can add the respective tool-BARS & they function but of course they do not contain all of the tools available in the toolBOXES.
The only way I can get the toolboxes to appear is to start ArcMap or ArcScene with an existing document that has already had a 3D Analyst or Spatial Analyst tool run on one or more of their layers. When I start the programs with a new blank document the extension toolboxes don't show up no matter what layers I add even though the extentions are definitely enabled.
I am running a 9.3.1 ArcEditor license and noticed this problem as soon as I installed it a few months ago. Unfortunately it's an educational license which does not come with support; I contacted ESRI support anyway & they only help they (reluctantly) offered was "just use the toolbar". #!@#$@$!##!!!!