fixed problem where we got an error when changing a format selection on a tree node above a document version

PROMS/VEPROMS User Interface/frmFolderProperties.cs

@@ -338,6 +338,7 @@ namespace VEPROMS
 
 		private void SaveApprStages()
 		{
+			if (myStageInfoList == null) return;
 			foreach (StageInfo si in myStageInfoList)// spin through old list (database)
 			{
 				LocalStageInfo found = null;
@@ -379,6 +380,7 @@ namespace VEPROMS
 
 		private void SaveAnnotationTypes()
 		{
+			if (myAnnotationTypeInfoList == null) return;
 			foreach (AnnotationTypeInfo ai in myAnnotationTypeInfoList) //spin through old list (database)
 			{
 				LocalAnnotationTypeInfo found = null;