Not All Processes Redirecting Standard Output

Hello All, TheMeq here. I have this application that starts a Minecraft Server, and I would like the console text to output to a listbox. It works perfectly fine using the Minecraft Server 1.7.2 jar, but not with the Minecraft Server 1.6.4 jar, or 1.6.2 jar. If I run these commands on the command line, they work as expected, and I've msgbox'd out the full command as it should run, but it doesn't appear to want to work for the 1.6.2 or 1.6.4 jar files.

Here is my code (additional bits extracted, if required, will post). TabSwitch() is a function that simply switches the current tab in a tabcontrol.
MS_SERVER_LOCATION and MS_SERVER_JARFILE are all set in another tab when the form loads. As I say, this works perfectly fine for the 1.7.2 jar, just not the 1.6.4 or 1.6.2 jar, although all of them produce console output when run on the command line.

Minecraft 1.7.2 Server Jar - https://s3.amazonaws.com/Minecraft.D...rver.1.7.2.jar
Minecraft 1.6.4 Server Jar - https://s3.amazonaws.com/Minecraft.D...rver.1.6.4.jar
Minecraft 1.6.2 Server Jar - https://s3.amazonaws.com/Minecraft.D...rver.1.6.2.jar

Code:

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Imports System.IO

Public Class Form1

    Public proc As New Process
    Public std_out As StreamReader
    Public std_in As StreamWriter
    Public MS_SERVER_LOCATION As String = ""
    Public MS_SERVER_JARFILE As String = ""
    Public MS_EASTER_EGG As String = ""
    Public ProgramIsRunning As Integer
    Public ServerIsRunning As Integer
    Public ServerIsSet As Integer = 0

    Function LogIt(ThisText)
        If ThisText <> Nothing Then
            ListBox1.Items.Add(ThisText)
            ListBox1.SelectedIndex = ListBox1.Items.Count - 1
        End If
        Return 0
    End Function

    Private Sub BackgroundWorker1_DoWork(sender As System.Object, e As System.ComponentModel.DoWorkEventArgs) Handles BackgroundWorker1.DoWork
        Dim start_info As New ProcessStartInfo()

        start_info.FileName = "java"
        start_info.UseShellExecute = False
        start_info.CreateNoWindow = True
        start_info.RedirectStandardOutput = True
        start_info.RedirectStandardInput = True
        start_info.WindowStyle = ProcessWindowStyle.Hidden
        start_info.Arguments = " -Xmx1024M -Xms1024M -jar " + MS_SERVER_LOCATION + "\" + MS_SERVER_JARFILE + " nogui"

        proc.StartInfo = start_info
        proc.Start()

        std_out = proc.StandardOutput
        std_in = proc.StandardInput
        Do
            LogIt(std_out.ReadLine)
        Loop While ServerIsRunning = 1

    End Sub

    Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
        Control.CheckForIllegalCrossThreadCalls = False
        ProgramIsRunning = 1
        If ServerIsSet = 0 Then
            MenuStrip1.Enabled = False
            TabSwitch(7)
        End If
    End Sub

    Private Sub Form1_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
        ProgramIsRunning = 0
        If ServerIsRunning = 1 Then
            proc.StandardInput.WriteLine("/stop")
            proc.StandardInput.Flush()
            proc.Close()
        End If
    End Sub

    Private Sub StartToolStripMenuItem_Click(sender As System.Object, e As System.EventArgs) Handles StartToolStripMenuItem.Click
        LogIt("[INFO] Attempting to start server...")
        If MS_SERVER_JARFILE = "" Or MS_SERVER_LOCATION = "" Then
            LogIt("[INFO] Server Jar file and/or Location has not been defined.")
        Else
            LogIt("[INFO] Starting JAVA, Please wait...")
            BackgroundWorker1.RunWorkerAsync()
            ServerIsRunning = 1
            StartToolStripMenuItem.Enabled = False
        End If

        TabSwitch(0)
    End Sub
End Class

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Unfortunately i don't know any thing about minecraft but yet am expected to download external .rar files.

can you explain this abuse please when your even using the bgw class that handles invoking for you.

Code:

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Control.CheckForIllegalCrossThreadCalls = False

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There jar files actually, linked from minecrafts own website, and I didn't know it was abuse, it was sample code copied from elsewhere.

Learn to respond a bit nicer. Ta.