changed warnings into errors when load_mh_file or recovery is used and

there is no metropolis history file

matlab/CutSample.m

@@ -37,12 +37,10 @@ DirectoryName = CheckPath('metropolis',M_.dname);
 file = dir([ DirectoryName ,filesep,  M_.fname '_mh_history.mat']);
 files = dir([ DirectoryName ,filesep, M_.fname '_mh*.mat' ]);
 if ~length(files)
-    disp('MH:: FAILURE! there is no MH file to load here!')
-    return
+    error('MH:: FAILURE! there is no MH file to load here!')
 end
 if ~length(file)
-    disp('MH:: FAILURE! there is no MH-history file!')
-    return
+    error('MH:: FAILURE! there is no MH-history file!')
 else
     load([ DirectoryName '/'  M_.fname '_mh_history.mat'])
 end

matlab/metropolis_hastings_initialization.m

@@ -221,12 +221,10 @@ elseif options_.load_mh_file && ~options_.mh_recover
     file = dir([ MhDirectoryName '/'  ModelName '_mh_history.mat' ]);
     files = dir([ MhDirectoryName filesep ModelName '_mh*.mat']);
     if ~length(files)
-        disp('MH:: FAILURE! there is no MH file to load here!')
-        return
+        error('MH:: FAILURE! there is no MH file to load here!')
     end
     if ~length(file)
-        disp('MH:: FAILURE! there is no MH-history file!')
-        return
+        error('MH:: FAILURE! there is no MH-history file!')
     else
         load([ MhDirectoryName '/'  ModelName '_mh_history.mat'])
     end
@@ -281,8 +279,7 @@ elseif options_.mh_recover
     disp(' ')
     file = dir([MhDirectoryName '/'  ModelName '_mh_history.mat']);
     if ~length(file)
-        disp('MH:: FAILURE! there is no MH-history file!')
-        return
+        error('MH:: FAILURE! there is no MH-history file!')
     else
         load([ MhDirectoryName '/'  ModelName '_mh_history.mat'])
     end