trouble installing latest maxima



I have just tried to install the latest maxima rpm on redhat 9.2 for 
intel. Uponi invoking the maxima command in a terminal, I get the 
message "/usr/bin/maxima: unable to determine MAXIMA_PREFIX".

xmaxima does not work either. There is no command line for input. 
Thanks for any help.
Dick Fell

Richard N. Fell
Fisher School of Physics
Brandeis University
Waltham, Ma 02454
781.736.2860