diff --git a/arFramework3/Advanced/arCreateDataStruct.m b/arFramework3/Advanced/arCreateDataStruct.m
index 0271419f..060cd82a 100644
--- a/arFramework3/Advanced/arCreateDataStruct.m
+++ b/arFramework3/Advanced/arCreateDataStruct.m
@@ -161,8 +161,12 @@
 D.fp = transpose(D.p);
 
 % execute substitutions from ar.model.p/ar.model.fp
-[int, iA, iB] = intersect(D.fp, ar.model.p);
-D.fp(iA) = ar.model.fp(iB);
+% try
+    [int, iA, iB] = intersect(D.fp, ar.model(m).p);
+% catch
+%     ar.model.p
+% end
+D.fp(iA) = ar.model(m).fp(iB);
 
 %% now replace fp which was provided as function argument:
 [~,ia,ib] = intersect(D.p,pold);
diff --git a/arFramework3/Advanced/arFindInputs.m b/arFramework3/Advanced/arFindInputs.m
index 1c8dbacb..205ef78b 100644
--- a/arFramework3/Advanced/arFindInputs.m
+++ b/arFramework3/Advanced/arFindInputs.m
@@ -61,7 +61,7 @@
 
                 for c = 1 : length( step1 )
                     ar.model(m).condition(a).fu{b}(step1(c):end);
-                    chk = strsplit(ar.model(m).condition(a).fu{b}(step1(c):end),',');
+                    chk = strsplit(ar.model(m).condition(a).fu{b}(step1(c):end),',')
                     stepLocations{end+1} = chk{3}; %#ok
                 end
                 for c = 1 : length( step2 )
diff --git a/arFramework3/Advanced/arRecompile.m b/arFramework3/Advanced/arRecompile.m
index fcb092ec..958b6129 100644
--- a/arFramework3/Advanced/arRecompile.m
+++ b/arFramework3/Advanced/arRecompile.m
@@ -24,6 +24,13 @@ function arRecompile(sameParameterSettings, varargin)
 
 if isfield(ar,'setup')  % only available in higher verions
     arIn = arDeepCopy(ar);
+
+    if(~isfield(arIn.setup,'backup_model_folder_local'))
+        error('arRecompile: ar.setup.backup_model_folder_local does not exist. Save first via arSave.')
+    end
+    if(~isfield(arIn.setup,'backup_data_folder'))
+        error('arRecompile: ar.setup.backup_data_folder does not exist. Save first via arSave.')
+    end
     
     try
         for i=1:length(arIn.setup.commands)