update crash from 8.3 to 8.4.1

[Former user]

update showed an error Aborted update now launch box is gone and cannot boot have back up xml and licence but wont load anything.. will i have to start all over again... it was much easier when you only had to keep 1 XML back up...this is the error..

The system cannot find the file specified

App: Big Box Version: 8.3 Type: System.ComponentModel.Win32Exception Site: Boolean StartWithShellExecuteEx(System.Diagnostics.ProcessStartInfo) Source: System

at System.Diagnostics.Process.StartWithShellExecuteEx(ProcessStartInfo startInfo) at System.Diagnostics.Process.Start(ProcessStartInfo startInfo) at Unbroken.LaunchBox.Wpf.BigBox.App..ctor() at () at Unbroken.LaunchBox.Wpf.BigBox.BigBoxProgram.Main()

Recent Log:

11:50:50 AM Exception