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Hi there, I ran this software with Wine (2.0.2) under Xubuntu Distributor ID: Ubuntu Description: Ubuntu 16.04.3 LTS Release: 16.04 Codename: xenial but after installing two required packages, Wine showed this message: System.InvalidOperationException: WinForms_SeeInnerException ---> System.NullReferenceException: Object reference not set to an instance of an object at System.Windows.Forms.WebBrowser.Navigate (System.Uri url) <0x1f1a840 + 0x0004b> in <filename unknown>:0 at System.Windows.Forms.WebBrowser.set_Url (System.Uri value) <0x1f1a808 + 0x00023> in <filename unknown>:0 at (wrapper remoting-invoke-with-check) System.Windows.Forms.WebBrowser:set_Url (System.Uri) at Windows_ISO_Downloader.Form1.InitializeComponent () <0x1e92030 + 0x0472f> in <filename unknown>:0 at Windows_ISO_Downloader.Form1..ctor () <0x1e6a810 + 0x000fb> in <filename unknown>:0 at (wrapper managed-to-native) System.Reflection.MonoCMethod:InternalInvoke (System.Reflection.MonoCMethod,object,object[],System.Exception&) at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) <0x1e68d90 + 0x00033> in <filename unknown>:0 --- End of inner exception stack trace --- at Windows_ISO_Downloader.My.MyProject+MyForms.Create__Instance__[T] (T Instance) <0x1e69560 + 0x0027f> in <filename unknown>:0 at Windows_ISO_Downloader.My.MyProject+MyForms.get_Form1 () <0x1e69508 + 0x0001b> in <filename unknown>:0 at Windows_ISO_Downloader.My.MyApplication.OnCreateMainForm () <0x1e69488 + 0x00017> in <filename unknown>:0 at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun () <0x1e693e0 + 0x00029> in <filename unknown>:0 at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run (System.String[] commandLine) <0x1e693c8 + 0x00010> in <filename unknown>:0 at Windows_ISO_Downloader.My.MyApplication.Main (System.String[] Args) <0x1e60f58 + 0x0002f> in <filename unknown>:0 [ERROR] FATAL UNHANDLED EXCEPTION: System.InvalidOperationException: WinForms_SeeInnerException ---> System.NullReferenceException: Object reference not set to an instance of an object at System.Windows.Forms.WebBrowser.Navigate (System.Uri url) <0x1f1a840 + 0x0004b> in <filename unknown>:0 at System.Windows.Forms.WebBrowser.set_Url (System.Uri value) <0x1f1a808 + 0x00023> in <filename unknown>:0 at (wrapper remoting-invoke-with-check) System.Windows.Forms.WebBrowser:set_Url (System.Uri) at Windows_ISO_Downloader.Form1.InitializeComponent () <0x1e92030 + 0x0472f> in <filename unknown>:0 at Windows_ISO_Downloader.Form1..ctor () <0x1e6a810 + 0x000fb> in <filename unknown>:0 at (wrapper managed-to-native) System.Reflection.MonoCMethod:InternalInvoke (System.Reflection.MonoCMethod,object,object[],System.Exception&) at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj, System.Object[] parameters) <0x1e68d90 + 0x00033> in <filename unknown>:0 --- End of inner exception stack trace --- at Windows_ISO_Downloader.My.MyProject+MyForms.Create__Instance__[T] (T Instance) <0x1e69560 + 0x0027f> in <filename unknown>:0 at Windows_ISO_Downloader.My.MyProject+MyForms.get_Form1 () <0x1e69508 + 0x0001b> in <filename unknown>:0 at Windows_ISO_Downloader.My.MyApplication.OnCreateMainForm () <0x1e69488 + 0x00017> in <filename unknown>:0 at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun () <0x1e693e0 + 0x00029> in <filename unknown>:0 at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run (System.String[] commandLine) <0x1e693c8 + 0x00010> in <filename unknown>:0 at Windows_ISO_Downloader.My.MyApplication.Main (System.String[] Args) <0x1e60f58 + 0x0002f> in <filename unknown>:0 Let me know if you could help me. Thanks in advance. Kindest regards, Abelardo.