TAStudio:

-Dis/enable recent macros menu along with other macro menu items.
-Remove redundant code from commit 350724a, make use of existing method.
-Fix regressions from commits 0d72cd9 and cb912be in said method.

src/BizHawk.Client.EmuHawk/tools/TAStudio/TAStudio.MenuItems.cs

@@ -21,6 +21,7 @@ namespace BizHawk.Client.EmuHawk
 
 			saveSelectionToMacroToolStripMenuItem.Enabled =
 				placeMacroAtSelectionToolStripMenuItem.Enabled =
+				recentMacrosToolStripMenuItem.Enabled =
 				TasView.AnyRowsSelected;
 		}
 
@@ -265,14 +266,8 @@ namespace BizHawk.Client.EmuHawk
 
 			if (file != null)
 			{
-				var macro = new MovieZone(file.FullName, Emulator, MovieSession, Tools);
-				if (macro != null)
-				{
-					macro.Start = TasView.FirstSelectedIndex ?? 0;
-					macro.PlaceZone(CurrentTasMovie, Config);
-
-					Config.RecentMacros.Add(file.FullName);
-				}
+				DummyLoadMacro(file.FullName);
+				Config.RecentMacros.Add(file.FullName);
 			}
 		}
 

src/BizHawk.Client.EmuHawk/tools/TAStudio/TAStudio.cs

@@ -726,14 +726,14 @@ namespace BizHawk.Client.EmuHawk
 
 		private void DummyLoadMacro(string path)
 		{
-			if (!TasView.Focused && TasView.AnyRowsSelected)
+			if (!TasView.AnyRowsSelected)
 			{
 				return;
 			}
 
 			var loadZone = new MovieZone(path, Emulator, MovieSession, Tools)
 			{
-				Start = TasView.FirstSelectedIndex ?? 0
+				Start = TasView.FirstSelectedIndex.Value
 			};
 			loadZone.PlaceZone(CurrentTasMovie, Config);
 		}