diff --git a/TBF/BenchControl/DataEntry/StandardCamera/TestStartEndForm.cs b/TBF/BenchControl/DataEntry/StandardCamera/TestStartEndForm.cs
index 59ce34d32..4f3559fab 100644
--- a/TBF/BenchControl/DataEntry/StandardCamera/TestStartEndForm.cs
+++ b/TBF/BenchControl/DataEntry/StandardCamera/TestStartEndForm.cs
@@ -297,7 +297,8 @@ namespace TBF.BenchControl.DataEntry.StandardCamera
 					switch (mode)
 					{
 						case Tst.Start:
-							if (disabled != null && wmPos <= disabled.Length && disabled[wmPos - 1])
+							if ((disabled != null && wmPos <= disabled.Length && disabled[wmPos - 1]) ||
+                                (regReaders != null && wmPos <= regReaders.Length && regReaders[wmPos - 1] == null))
 							{
 								startTextBoxes[i].Enabled = false;
 							}
@@ -309,8 +310,9 @@ namespace TBF.BenchControl.DataEntry.StandardCamera
 							break;
 
 						case Tst.End:
-							if (disabled != null && wmPos <= disabled.Length && disabled[wmPos - 1])
-							{
+                            if ((disabled != null && wmPos <= disabled.Length && disabled[wmPos - 1]) ||
+                                (regReaders != null && wmPos <= regReaders.Length && regReaders[wmPos - 1] == null))
+                            {
 								startTextBoxes[i].Enabled = false;
 								endTextBoxes[i].Enabled = false;
 							}
@@ -324,8 +326,9 @@ namespace TBF.BenchControl.DataEntry.StandardCamera
 							break;
 
 						case Tst.Both:
-							if (disabled != null && wmPos <= disabled.Length && disabled[wmPos - 1])
-							{
+                            if ((disabled != null && wmPos <= disabled.Length && disabled[wmPos - 1]) ||
+                                (regReaders != null && wmPos <= regReaders.Length && regReaders[wmPos - 1] == null))
+                            {
 								startTextBoxes[i].Enabled = false;
 								endTextBoxes[i].Enabled = false;
 							}
@@ -561,8 +564,29 @@ namespace TBF.BenchControl.DataEntry.StandardCamera
 					if (enabledTextBoxes[i] == currentFocusOwner)
 					{
 						/// Change focus to the next enabled text box
-						enabledTextBoxes[(i + 1) % enabledTextBoxes.Count].Focus();
-						return;
+                        var currentTextBox = enabledTextBoxes[(i + 1) % enabledTextBoxes.Count];
+						currentTextBox.Focus();
+                        
+                        /// Load the respective image
+                        for (int j = 0; j < startTextBoxes.Length; j++)
+                        {
+                            if (startTextBoxes[j] == currentTextBox)
+                            {
+                                LoadImage(Tst.Start, j);
+                                return;
+                            }
+                        }
+                        for (int j = 0; j < endTextBoxes.Length; j++)
+                        {
+                            if (endTextBoxes[j] == currentTextBox)
+                            {
+                                LoadImage(Tst.End, j);
+                                return;
+                            }
+                        }
+
+                        /// No image found
+                        return;
 					}
 				}
 			}