diff --git a/+ws/WavesurferModel.m b/+ws/WavesurferModel.m
index 1180f3af..b9e98346 100644
--- a/+ws/WavesurferModel.m
+++ b/+ws/WavesurferModel.m
@@ -166,9 +166,20 @@
                 self.RefillerIPCSubscriber_.setDelegate(self) ;
                 self.RefillerIPCSubscriber_.connect(ws.WavesurferModel.RefillerIPCPublisherPortNumber) ;
 
-                % Start the other Matlab processes
-                system('start matlab -nojvm -minimize -r "looper=ws.Looper(); looper.runMainLoop(); clear; quit()"');
-                system('start matlab -nojvm -minimize -r "refiller=ws.Refiller(); refiller.runMainLoop(); clear; quit()"');
+                % Start the other Matlab processes, passing the relevant
+                % path information to make sure they can find all the .m
+                % files they need.
+                [pathToRepoRoot,pathToMatlabZmqLib] = ws.WavesurferModel.pathNamesThatNeedToBeOnSearchPath() ;
+                looperLaunchString = ...
+                    sprintf('start matlab -nojvm -minimize -r "addpath(''%s''); addpath(''%s''); looper=ws.Looper(); looper.runMainLoop(); clear; quit()"' , ...
+                            pathToRepoRoot , ...
+                            pathToMatlabZmqLib ) ;
+                system(looperLaunchString) ;
+                refillerLaunchString = ...
+                    sprintf('start matlab -nojvm -minimize -r "addpath(''%s''); addpath(''%s'');  refiller=ws.Refiller(); refiller.runMainLoop(); clear; quit()"' , ...
+                            pathToRepoRoot , ...
+                            pathToMatlabZmqLib ) ;
+                system(refillerLaunchString) ;
                 
                 %system('start matlab -nojvm -minimize -r "looper=ws.Looper(); looper.runMainLoop(); quit()"');
                 %system('start matlab -r "dbstop if error; looper=ws.Looper(); looper.runMainLoop(); quit()"');
@@ -176,7 +187,7 @@
 
                 % Start broadcasting pings until the satellite processes
                 % respond
-                nPingsMax=60 ;
+                nPingsMax=20 ;
                 isLooperAlive=false;
                 isRefillerAlive=false;
                 for iPing = 1:nPingsMax ,
@@ -2129,6 +2140,21 @@ function mimicUserSettings_(self, other)
         end  % function
     end  % public methods block
     
+    methods (Static)
+        function [pathToRepoRoot,pathToMatlabZmqLib] = pathNamesThatNeedToBeOnSearchPath()
+            % Allow user to invoke Wavesurfer from the Matlab command line, for
+            % this Matlab session only.  Modifies the user's Matlab path, but does
+            % not safe the modified path.
+
+            pathToWavesurferModel = mfilename('fullpath') ;
+            pathToWsModulerFolder = fileparts(pathToWavesurferModel) ;  % should be +ws folder
+            pathToRepoRoot = fileparts(pathToWsModulerFolder) ;  % should be repo root
+            pathToMatlabZmqLib = fullfile(pathToRepoRoot,'matlab-zmq','lib') ;
+            
+            %result = { pathToRepoRoot , pathToMatlabZmqLib } ;
+        end
+    end  % static methods block
+    
 end  % classdef
 
 
diff --git a/installWavesurferForNow.m b/installWavesurferForNow.m
index 27075732..b20a5466 100644
--- a/installWavesurferForNow.m
+++ b/installWavesurferForNow.m
@@ -3,16 +3,16 @@ function installWavesurferForNow()
     % this Matlab session only.  Modifies the user's Matlab path, but does
     % not safe the modified path.
 
-    wavesurferPath = which('wavesurfer');
+    %wavesurferPath = which('wavesurfer');
+    pathToInstallWavesurferForNow = mfilename('fullpath');
+    
+%     % This really shouldn't happen given that this function is distributed in the
+%     % same directory as wavesurfer.m.
+%     if isempty(pathToInstallWavesurferForNow) ,
+%         error('wavesurfer:configureFailure', 'Wavesurfer does not appear to be installed correctly.  wavesurfer.m is missing.\n');
+%     end
 
-    % This really shouldn't happen given that this function is distributed in the
-    % same directory as wavesurfer.m.
-    if isempty(wavesurferPath) ,
-        error('wavesurfer:configureFailure', 'Wavesurfer does not appear to be installed correctly.  wavesurfer.m is missing.\n');
-    end
-
-    wavesurferParentFolder=fileparts(wavesurferPath);
-    addpath(wavesurferParentFolder);
-    %addpath(fullfile(wavesurferParentFolder,'wavesurfer_guis'));
-    addpath(fullfile(wavesurferParentFolder,'matlab-zmq','lib'));
+    repoRootFolderName=fileparts(pathToInstallWavesurferForNow);
+    addpath(repoRootFolderName);
+    addpath(fullfile(repoRootFolderName,'matlab-zmq','lib'));
 end