diff --git a/PROMS/Volian.Controls.Library/DisplayLibDocs.cs b/PROMS/Volian.Controls.Library/DisplayLibDocs.cs
index 352e7b5c..2bb90099 100644
--- a/PROMS/Volian.Controls.Library/DisplayLibDocs.cs
+++ b/PROMS/Volian.Controls.Library/DisplayLibDocs.cs
@@ -304,7 +304,28 @@ namespace Volian.Controls.Library
 		private void btnPrint_Click(object sender, EventArgs e)
 		{
 			string paperSize = "Letter";
-			paperSize = LibDocList[listBoxLibDocs.SelectedIndex].LibraryDocumentUsageList[0].ActiveFormat.PlantFormat.FormatData.PDFPageSize.PaperSize; // C2020-002 paper size is now set in the format files
+			// B2020-045: Getting Library Document usage report when no documents are selected crashes with a null reference if the first
+			//   in libdoc usage list is null  (added code that finds a non-null usage list and uses first to get format.  Otherwise
+			//   uses the default "Letter" paper size).
+			ItemInfo ii = null;
+			int sel = listBoxLibDocs.SelectedIndex < 0 ? 0 : listBoxLibDocs.SelectedIndex;
+			if (LibDocList[sel].LibraryDocumentUsageList == null || LibDocList[sel].LibraryDocumentUsageList.Count == 0)
+			{
+				// selected lib doc doesn't have usages, loop through to find one.  Need a usage to get the active format
+				for (int i = 0; i<LibDocList.Count; i++)
+				{
+					if (LibDocList[i].LibraryDocumentUsageList != null && LibDocList[i].LibraryDocumentUsageList.Count>0)
+					{
+						ii = LibDocList[i].LibraryDocumentUsageList[0];
+						break;
+					}
+				}
+			}
+			else
+				ii = LibDocList[sel].LibraryDocumentUsageList[0];
+
+			if (ii != null)
+				paperSize = ii.ActiveFormat.PlantFormat.FormatData.PDFPageSize.PaperSize; // C2020-002 paper size is now set in the format files
 			OnPrintRequest(new DisplayLibDocEventArgs("Library Document Usage", LibDocList, paperSize));
 		}
 	}