Form automatic closes

[Arclite86]

i got this message in autoit window

--> IE.au3 T3.0-1 Warning from function _IEAttach, $_IEStatus_NoMatch
"C:\Program Files (x86)\AutoIt3\Include\String.au3" (42) : ==> Subscript used on non-accessible variable.:
Func _StringBetween($sString, $sStart, $sEnd, $fCase = False)
Func _StringBetween($sString, $sStart, $sEnd, $fCase = Fal^ ERROR
->11:03:58 AutoIt3.exe ended.rc:1
>Exit code: 1    Time: 20.373

and than it automatic closes,

and can somebody tell me that if it shows this code that i get a mgsbox 

[l3ill]

"C:\Program Files (x86)\AutoIt3\Include\String.au3" (42) : ==> Subscript used on non-accessible variable.:

Is the StringBetween function in Sting.au3 include.

You are incorrectly calling this function, and it looks like its the False Parameter at the end.

and can somebody tell me that if it shows this code that i get a mgsbox

If you mean a debug MsgBox?

MsgBox(0, "", "@error = " & @error)

Bill

edit:  put the message box directly under the failing function

Edited January 27, 2014 by l3ill