Lua functions list - don't throw exceptiosn when filtering, don't know why it happens but this will squash it, and it isn't important enough to know why.

BizHawk.Client.EmuHawk/tools/Lua/LuaFunctionsForm.cs

@@ -53,6 +53,10 @@ namespace BizHawk.Client.EmuHawk
 		{
 			text = string.Empty;
 
+			try
+			{ 
+				if (FilteredList.Any() && index < FilteredList.Count)
+				{
 					switch (column)
 					{
 						case 0:
@@ -72,6 +76,12 @@ namespace BizHawk.Client.EmuHawk
 							break;
 					}
 				}
+			}
+			catch
+			{
+				/* Eat it*/
+			}
+		}
 
 		private void OrderColumn(int column)
 		{