Cannot get ltplus to run

I'm having trouble with ltplus. The files "ltpgo & ltplus" were located in my
/home/atterbury/grass/4.1/ltp/bin directory. When I tried to type ltpgo I got the error message "No such command '/usr/local/ltp/bin/ltplus'". I copied the
"ltpgo & ltplus" files to /usr/local/ltp/bin directory, then when I typed
ltpgo I got the message:

               setting internal variables: paths.h
      from: /usr/local/ltp

                         Welcome to Line Trace Plus.
                         Version 2.22 Dabritz/Jonson/Martin,

Loading lookup tables. Done.
Loading configuration variables.

error in initialize: get_config failed to execute.

Line Trace Plus terminating.

Could anyone please help. Thanks

                             Bob Atnip
                             Camp Atterbury
                              (812) 526-1249
                              robert%atterbury@cerl.cecer.army.mil