Unhandled Exception: System.ArgumentOutOfRangeException: Length cannot be less than zero.

[TheCubeFarm]

c:\bats>supervisor "notepad.exe"

Unhandled Exception: System.ArgumentOutOfRangeException: Length cannot be less than zero.
Parameter name: length
at System.String.Substring(Int32 startIndex, Int32 length)
at Supervisor.Program.ParseArgs(String[] args)
at Supervisor.Program.Main(String[] args)