GPS Invalid command

["Robert C. Leif" <rleif@rleif.com>]

   I have downloaded and set up GPS 2.1.0 (20041129) hosted on
pentium-mingw32msv.  When I use project files that have previously work and
try any selection under the Build menu, for instance Check Syntax, I get the
following error message: 
   make -s -C g:\cytometryml\ada\ -f Makefile.cytometryml17nov04 Build=DEBUG
o 
   [2005-04-14 11:41:25] Invalid command
   
   When I start GPS, I get the message: [2005-04-14 11:48:14] Command not
found in path: gnatls
   [2005-04-14 11:48:17] G:\Ada_Utilities\strings\strings.gpr:50:07:
warning: value "DEBUG" is not used as label
   strings.gpr is not the correct project file. The name of the correct
project file (cytometryml17nov04) is present in the Project. Edit Project
Properties. 
   I could not find a search capability in The GPS online manual. No list of
error messages appeared to be present in the manual.
   My programs compile with AdaGide. I am using GNAT 3.15p
   
   Any help will be appreciated. Should I download the GPS again and from
which source? Should I switch to A# under Visual Studio, which I already
have?
   Bob Leif