diff --git a/experiment_designer/form_main.lfm b/experiment_designer/form_main.lfm
index 2290e00..0c3ad4f 100644
--- a/experiment_designer/form_main.lfm
+++ b/experiment_designer/form_main.lfm
@@ -3,7 +3,7 @@ object FormDesigner: TFormDesigner
   Height = 656
   Top = 29
   Width = 653
-  HorzScrollBar.Page = 521
+  HorzScrollBar.Page = 346
   VertScrollBar.Page = 637
   AutoScroll = True
   Caption = 'Planejar Experimento'
@@ -18,12 +18,12 @@ object FormDesigner: TFormDesigner
   LCLVersion = '1.6.2.0'
   object PageControl: TPageControl
     Left = 0
-    Height = 793
+    Height = 765
     Top = 0
     Width = 643
-    ActivePage = TabSheetConditions
+    ActivePage = TabSheetExperiment
     Align = alClient
-    TabIndex = 1
+    TabIndex = 0
     TabOrder = 0
     object TabSheetExperiment: TTabSheet
       Caption = 'Experimento'
@@ -32,7 +32,7 @@ object FormDesigner: TFormDesigner
       ChildSizing.EnlargeHorizontal = crsHomogenousChildResize
       ChildSizing.Layout = cclLeftToRightThenTopToBottom
       ChildSizing.ControlsPerLine = 1
-      ClientHeight = 760
+      ClientHeight = 732
       ClientWidth = 637
       object GBConditions: TGroupBox
         Left = 0
@@ -249,7 +249,7 @@ object FormDesigner: TFormDesigner
       ChildSizing.EnlargeHorizontal = crsHomogenousChildResize
       ChildSizing.Layout = cclLeftToRightThenTopToBottom
       ChildSizing.ControlsPerLine = 1
-      ClientHeight = 760
+      ClientHeight = 732
       ClientWidth = 637
       object ComboCurrentCondition: TComboBox
         Left = 0
@@ -655,14 +655,14 @@ object FormDesigner: TFormDesigner
       ChildSizing.EnlargeHorizontal = crsHomogenousChildResize
       ChildSizing.Layout = cclLeftToRightThenTopToBottom
       ChildSizing.ControlsPerLine = 1
-      ClientHeight = 760
+      ClientHeight = 732
       ClientWidth = 637
       Enabled = False
       object RGContingencyType: TRadioGroup
         Left = 0
-        Height = 58
+        Height = 59
         Top = 10
-        Width = 628
+        Width = 637
         AutoFill = True
         Caption = 'Mostrar'
         ChildSizing.LeftRightSpacing = 6
@@ -672,8 +672,8 @@ object FormDesigner: TFormDesigner
         ChildSizing.ShrinkVertical = crsScaleChilds
         ChildSizing.Layout = cclLeftToRightThenTopToBottom
         ChildSizing.ControlsPerLine = 1
-        ClientHeight = 41
-        ClientWidth = 624
+        ClientHeight = 42
+        ClientWidth = 633
         Items.Strings = (
           'Contingências Operantes'
           'Metacontingências'
@@ -683,9 +683,9 @@ object FormDesigner: TFormDesigner
       end
       object ComboCurrentContingency: TComboBox
         Left = 0
-        Height = 23
-        Top = 73
-        Width = 628
+        Height = 27
+        Top = 74
+        Width = 637
         ItemHeight = 0
         OnChange = ComboCurrentContingencyChange
         Style = csDropDownList
@@ -694,39 +694,39 @@ object FormDesigner: TFormDesigner
       object PanelContingenciesButtons: TPanel
         Left = 0
         Height = 26
-        Top = 101
-        Width = 628
+        Top = 106
+        Width = 637
         ChildSizing.LeftRightSpacing = 25
         ChildSizing.HorizontalSpacing = 50
         ChildSizing.EnlargeHorizontal = crsHomogenousChildResize
         ChildSizing.Layout = cclLeftToRightThenTopToBottom
         ChildSizing.ControlsPerLine = 3
         ClientHeight = 26
-        ClientWidth = 628
+        ClientWidth = 637
         TabOrder = 1
         object BtnAppendContingency: TButton
           Left = 25
           Height = 25
           Top = 0
-          Width = 160
+          Width = 161
           Caption = 'Adicionar'
           OnClick = BtnAppendContingencyClick
           TabOrder = 0
         end
         object BtnRemoveContingency: TButton
-          Left = 235
+          Left = 236
           Height = 25
           Top = 0
-          Width = 156
+          Width = 158
           Caption = 'Remover'
           OnClick = BtnRemoveContingencyClick
           TabOrder = 1
         end
         object BtnReorderContingency: TButton
-          Left = 441
+          Left = 444
           Height = 25
           Top = 0
-          Width = 162
+          Width = 168
           Caption = 'Reordenar'
           OnClick = BtnReorderContingencyClick
           TabOrder = 2
@@ -736,24 +736,24 @@ object FormDesigner: TFormDesigner
       object LabelContingencyName: TLabel
         Left = 0
         Height = 15
-        Top = 132
-        Width = 628
+        Top = 137
+        Width = 637
         Caption = 'Nome da contingência'
         ParentColor = False
       end
       object EditContingencyName: TEdit
         Left = 0
-        Height = 23
-        Top = 152
-        Width = 628
+        Height = 25
+        Top = 157
+        Width = 637
         OnEditingDone = EditContingencyNameEditingDone
         TabOrder = 2
       end
       object RGContingencyStyle: TRadioGroup
         Left = 0
-        Height = 115
-        Top = 180
-        Width = 628
+        Height = 122
+        Top = 187
+        Width = 637
         AutoFill = True
         Caption = 'Estilo da Resposta'
         ChildSizing.LeftRightSpacing = 6
@@ -763,8 +763,8 @@ object FormDesigner: TFormDesigner
         ChildSizing.ShrinkVertical = crsScaleChilds
         ChildSizing.Layout = cclLeftToRightThenTopToBottom
         ChildSizing.ControlsPerLine = 1
-        ClientHeight = 98
-        ClientWidth = 624
+        ClientHeight = 105
+        ClientWidth = 633
         ItemIndex = 0
         Items.Strings = (
           'Extinção'
@@ -780,8 +780,8 @@ object FormDesigner: TFormDesigner
       object LabelIf: TLabel
         Left = 0
         Height = 15
-        Top = 300
-        Width = 628
+        Top = 314
+        Width = 637
         Alignment = taCenter
         Caption = 'SE O PARTICIPANTE ESCOLHER'
         ParentColor = False
@@ -789,9 +789,9 @@ object FormDesigner: TFormDesigner
       end
       object GBContingencyRows: TGroupBox
         Left = 0
-        Height = 19
-        Top = 320
-        Width = 628
+        Height = 17
+        Top = 334
+        Width = 637
         Caption = 'Linhas'
         ChildSizing.LeftRightSpacing = 5
         ChildSizing.EnlargeHorizontal = crsHomogenousChildResize
@@ -803,8 +803,8 @@ object FormDesigner: TFormDesigner
       object LabelOperator: TLabel
         Left = 0
         Height = 15
-        Top = 344
-        Width = 628
+        Top = 356
+        Width = 637
         Alignment = taCenter
         Caption = 'E'
         ParentColor = False
@@ -812,9 +812,9 @@ object FormDesigner: TFormDesigner
       end
       object GBContingencyColors: TGroupBox
         Left = 0
-        Height = 19
-        Top = 364
-        Width = 628
+        Height = 17
+        Top = 376
+        Width = 637
         Caption = 'Cores'
         ChildSizing.HorizontalSpacing = 5
         ChildSizing.EnlargeHorizontal = crsHomogenousChildResize
@@ -826,8 +826,8 @@ object FormDesigner: TFormDesigner
       object LabelThen: TLabel
         Left = 0
         Height = 15
-        Top = 388
-        Width = 628
+        Top = 398
+        Width = 637
         Alignment = taCenter
         Caption = 'ENTÃO'
         ParentColor = False
@@ -835,47 +835,47 @@ object FormDesigner: TFormDesigner
       end
       object GBContingencyConsequence: TGroupBox
         Left = 0
-        Height = 344
-        Top = 408
-        Width = 628
+        Height = 364
+        Top = 418
+        Width = 637
         Caption = 'Consequência'
         ChildSizing.EnlargeHorizontal = crsHomogenousChildResize
         ChildSizing.Layout = cclLeftToRightThenTopToBottom
         ChildSizing.ControlsPerLine = 2
-        ClientHeight = 327
-        ClientWidth = 624
+        ClientHeight = 347
+        ClientWidth = 633
         TabOrder = 6
         Visible = False
         object LabelCsq1: TLabel
           Left = 0
           Height = 15
           Top = 0
-          Width = 394
+          Width = 409
           Caption = 'Pontos'
           ParentColor = False
         end
         object LabelCsq2: TLabel
-          Left = 394
+          Left = 409
           Height = 15
           Top = 0
-          Width = 230
+          Width = 224
           Caption = 'do Tipo'
           ParentColor = False
         end
         object SpinEditContingencyPoints: TSpinEdit
           Left = 0
-          Height = 23
+          Height = 27
           Top = 15
-          Width = 394
+          Width = 409
           MaxValue = 0
           OnEditingDone = ConsequenceStyleChange
           TabOrder = 0
         end
         object CBPointsType: TComboBox
-          Left = 394
-          Height = 23
+          Left = 409
+          Height = 27
           Top = 15
-          Width = 230
+          Width = 224
           ItemHeight = 0
           OnChange = ConsequenceStyleChange
           Style = csDropDownList
@@ -883,9 +883,9 @@ object FormDesigner: TFormDesigner
         end
         object RGBroadcastMessage: TRadioGroup
           Left = 0
-          Height = 77
-          Top = 38
-          Width = 394
+          Height = 80
+          Top = 42
+          Width = 409
           AutoFill = True
           Caption = 'Apresentar mensagem de notificação'
           ChildSizing.LeftRightSpacing = 6
@@ -895,8 +895,8 @@ object FormDesigner: TFormDesigner
           ChildSizing.ShrinkVertical = crsScaleChilds
           ChildSizing.Layout = cclLeftToRightThenTopToBottom
           ChildSizing.ControlsPerLine = 1
-          ClientHeight = 60
-          ClientWidth = 390
+          ClientHeight = 63
+          ClientWidth = 405
           ItemIndex = 0
           Items.Strings = (
             'a todos os participantes'
@@ -907,11 +907,11 @@ object FormDesigner: TFormDesigner
           TabOrder = 9
         end
         object CheckBoxImutableMessage: TCheckBox
-          Left = 394
-          Height = 77
+          Left = 409
+          Height = 80
           Hint = 'Marque se deseja uma mensagem fixa; o programa não atualizará o texto da mensagem caso o valor da pontuação mude ao longo do experimento.'
-          Top = 38
-          Width = 230
+          Top = 42
+          Width = 224
           AutoSize = False
           Caption = 'imutável'
           OnChange = CheckBoxImutableMessageChange
@@ -919,136 +919,136 @@ object FormDesigner: TFormDesigner
         end
         object LabelCsq3: TLabel
           Left = 0
-          Height = 23
-          Top = 115
-          Width = 394
+          Height = 25
+          Top = 122
+          Width = 409
           Caption = 'Texto no início da mensagem'
           ParentColor = False
         end
         object EditMessPrefix: TEdit
-          Left = 394
-          Height = 23
-          Top = 115
-          Width = 230
+          Left = 409
+          Height = 25
+          Top = 122
+          Width = 224
           OnEditingDone = EditMessDone
           TabOrder = 2
           Text = '$NICNAME'
         end
         object LabelCsq4: TLabel
           Left = 0
-          Height = 23
-          Top = 138
-          Width = 394
+          Height = 25
+          Top = 147
+          Width = 409
           Caption = 'Prefixo ao perder pontos'
           ParentColor = False
         end
         object EditMessPrefixLoss: TEdit
-          Left = 394
-          Height = 23
-          Top = 138
-          Width = 230
+          Left = 409
+          Height = 25
+          Top = 147
+          Width = 224
           OnEditingDone = EditMessDone
           TabOrder = 3
           Text = 'perdeu'
         end
         object LabelCsq5: TLabel
           Left = 0
-          Height = 23
-          Top = 161
-          Width = 394
+          Height = 25
+          Top = 172
+          Width = 409
           Caption = 'Sufixo ao perder pontos (Singular)'
           ParentColor = False
         end
         object EditMessSufixLossSingular: TEdit
-          Left = 394
-          Height = 23
-          Top = 161
-          Width = 230
+          Left = 409
+          Height = 25
+          Top = 172
+          Width = 224
           OnEditingDone = EditMessDone
           TabOrder = 4
           Text = 'ponto.'
         end
         object LabelCsq6: TLabel
           Left = 0
-          Height = 23
-          Top = 184
-          Width = 394
+          Height = 25
+          Top = 197
+          Width = 409
           Caption = 'Sufixo ao perder pontos (Plural)'
           ParentColor = False
         end
         object EditMessSufixLossPlural: TEdit
-          Left = 394
-          Height = 23
-          Top = 184
-          Width = 230
+          Left = 409
+          Height = 25
+          Top = 197
+          Width = 224
           OnEditingDone = EditMessDone
           TabOrder = 5
           Text = 'pontos.'
         end
         object LabelCsq7: TLabel
           Left = 0
-          Height = 23
-          Top = 207
-          Width = 394
+          Height = 25
+          Top = 222
+          Width = 409
           Caption = 'Prefixo ao ganhar pontos'
           ParentColor = False
         end
         object EditMessPrefixEarn: TEdit
-          Left = 394
-          Height = 23
-          Top = 207
-          Width = 230
+          Left = 409
+          Height = 25
+          Top = 222
+          Width = 224
           OnEditingDone = EditMessDone
           TabOrder = 6
           Text = 'ganhou'
         end
         object LabelCsq8: TLabel
           Left = 0
-          Height = 23
-          Top = 230
-          Width = 394
+          Height = 25
+          Top = 247
+          Width = 409
           Caption = 'Sufixo ao ganhar pontos (Singular)'
           ParentColor = False
         end
         object EditMessSufixEarnSingular: TEdit
-          Left = 394
-          Height = 23
-          Top = 230
-          Width = 230
+          Left = 409
+          Height = 25
+          Top = 247
+          Width = 224
           OnEditingDone = EditMessDone
           TabOrder = 7
           Text = 'ponto.'
         end
         object LabelCsq9: TLabel
           Left = 0
-          Height = 23
-          Top = 253
-          Width = 394
+          Height = 25
+          Top = 272
+          Width = 409
           Caption = 'Sufixo ao ganhar pontos (Plural)'
           ParentColor = False
         end
         object EditMessSufixEarnPlural: TEdit
-          Left = 394
-          Height = 23
-          Top = 253
-          Width = 230
+          Left = 409
+          Height = 25
+          Top = 272
+          Width = 224
           OnEditingDone = EditMessDone
           TabOrder = 8
           Text = 'pontos.'
         end
         object LabelCsq10: TLabel
           Left = 0
-          Height = 23
-          Top = 276
-          Width = 394
+          Height = 25
+          Top = 297
+          Width = 409
           Caption = 'Sufixo 0 pontos'
           ParentColor = False
         end
         object EditMessSufixZero: TEdit
-          Left = 394
-          Height = 23
-          Top = 276
-          Width = 230
+          Left = 409
+          Height = 25
+          Top = 297
+          Width = 224
           OnEditingDone = EditMessDone
           TabOrder = 11
           Text = 'não ganhou nem perdeu pontos.'
@@ -1056,8 +1056,8 @@ object FormDesigner: TFormDesigner
         object ButtonPreviewMessage: TButton
           Left = 0
           Height = 25
-          Top = 299
-          Width = 394
+          Top = 322
+          Width = 409
           Caption = 'Ver como a mensagem pode ser apresentada'
           OnClick = ButtonPreviewMessageClick
           TabOrder = 12
diff --git a/experiment_designer/form_main.pas b/experiment_designer/form_main.pas
index cac4e96..75bcdea 100644
--- a/experiment_designer/form_main.pas
+++ b/experiment_designer/form_main.pas
@@ -370,7 +370,8 @@ end;
 
 procedure TFormDesigner.RGContingencyStyleExit(Sender: TObject);
 begin
-  SaveContingency(ExtractDelimited(1,ComboCurrentCondition.Text,['|']),ExtractDelimited(1,ComboCurrentContingency.Text,['|']));
+  if ComboCurrentContingency.ItemIndex <> -1 then
+    SaveContingency(ExtractDelimited(1,ComboCurrentCondition.Text,['|']),ExtractDelimited(1,ComboCurrentContingency.Text,['|']));
 end;
 
 
--
libgit2 0.21.2