fix build issues

Author: JeBobs

BundleManager/MainForm.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Collections;
 using System.ComponentModel;
+using System.IO;
+using System.Text.RegularExpressions;
 using System.Threading;
 using System.Threading.Tasks;
 using System.Windows.Forms;