minor modifications to operation explorer

src/gui/UFRMOperationExplorer.lfm

@@ -9,6 +9,8 @@ object FRMOperationExplorer: TFRMOperationExplorer
   ClientWidth = 864
   Menu = OperationsExplorerMenu
   OnCreate = FormCreate
+  Position = poMainFormCenter
+  LCLVersion = '1.8.2.0'
   Visible = False
   object Panel1: TPanel
     Left = 0

src/gui/UFRMOperationExplorer.pas

@@ -126,7 +126,7 @@ var
   LNode: TNode;
   LStart, LEnd: int64;
 begin
-  LNode := TUserInterface.Node;
+  LNode := FNodeNotifyEvents.Node;
   if FBlockEnd < 0 then
   begin
     if LNode.Bank.BlocksCount > 0 then