Error -112 while connecting to a company with DI API 2004

While I'm connecting to a Company using Single Sign One DI/UI API the method Connect returns the error:

-112 : Error extracting dll from cab

I've erased SM_OBS_DLL folder from temp, the version of the DI API is 6.70.184.0, the version of SAP BO is 2004A (6.70.184) SP:00 PL:01 and the code the I use is:

• Main Method *******************

Sub Main()

Set Applicazione = New SboGuiApi

StringaConnessione = command

Applicazione.Connect StringaConnessione

Dim frm As Form1

Set frm = New Form1

frm.Visible = False

Load frm

frm.Timer1.Interval = 30000

End Sub

*******************************

• Timer ***********

Private Sub Timer1_Timer()

Set Eventi = New FatMasSBO

Set ApplicazioneBO = Eventi.applic

Timer1.Enabled = False

*******************************

• Init FatMasSBO *********

Private Sub Class_Initialize()

Dim i As Long

Dim ii As Long

Dim iii As Long

Set applic = Applicazione.GetApplication

Set Societa = New SAPbobsCOM.Company

Cookie = Societa.GetContextCookie

ConStr = applic.Company.GetConnectionContext(Cookie)

If Societa.Connected = True Then

Societa.Disconnect

End If

Ret = Societa.SetSboLoginContext(ConStr)

If Not Ret = 0 Then

applic.MessageBox "Metodo SetSboLoginContext fallito!"

Exit Sub

End If

Ret = Societa.Connect()

If Ret <> 0 Then

NonConnesso = True

applic.MessageBox "Errore di connessione al DB : " & Ret

End If

End Sub

****************************************

How I can solve this problem?

Thank

A. D'Angelo