diff --git a/PROMS/Volian.Controls.Library/DisplayTabItem.cs b/PROMS/Volian.Controls.Library/DisplayTabItem.cs
index 4f81fda0..f9600b74 100644
--- a/PROMS/Volian.Controls.Library/DisplayTabItem.cs
+++ b/PROMS/Volian.Controls.Library/DisplayTabItem.cs
@@ -181,6 +181,12 @@ namespace Volian.Controls.Library
 			if (dvi == null) return;
 			if (dvi.VersionType > 127)
 				MyStepTabPanel.MyStepPanel.VwMode = E_ViewMode.View;
+			//added by jcb 20130718 to support disabling create pdf button when multiunit until user selects a unit
+			if (dvi.MultiUnitCount > 1)
+				this.MyStepTabPanel.MyStepTabRibbon.btnPdfCreate.Enabled = false;
+			else
+				this.MyStepTabPanel.MyStepTabRibbon.btnPdfCreate.Enabled = true;
+			//end added by jcb 20130718
 		}
 		void DisplayTabItem_LostFocus(object sender, EventArgs e)
 		{
diff --git a/PROMS/Volian.Controls.Library/StepTabRibbon.designer.cs b/PROMS/Volian.Controls.Library/StepTabRibbon.designer.cs
index 33b046da..990a6111 100644
Binary files a/PROMS/Volian.Controls.Library/StepTabRibbon.designer.cs and b/PROMS/Volian.Controls.Library/StepTabRibbon.designer.cs differ