This Window Has Already Been Registered As a Drop Target

Hi all,

Using this code:

Code:

---

Private Sub IPrinter_Prnt(uPrintJob As PRINT_JOB)

    On Error GoTo ERR_Prnt
   
    Const ERROR_LOCATION As String = "Resource.CPrinter.IPrinter_Prnt"
   
    Dim uPrinter As PRINTER
    Dim lFreeFile As Long
    Dim PCL As String
    Dim sBuff As String, sChar As String, lCnt As Long, lLen As Long
    Dim Stream() As Byte
       
    '*********************
    '*  Get the PCL . . .
    '*********************
    lFreeFile = FreeFile
    Open uPrintJob.PCLPath For Binary Access Read Lock Read As #lFreeFile
    lLen = LOF(lFreeFile)
    ReDim Stream(lLen)
    For lCnt = 0 To lLen
        Get #lFreeFile, , Stream(lCnt)
    Next lCnt
    Close #lFreeFile
   
    sBuff = Stream
    Stream = StrConv(sBuff, vbFromUnicode)
   
    '****************************
    '* Print the document . . .
    '****************************
    PrintFromStream PhysicalPrintQueue(uPrintJob.LogicalPrinter), Stream
   
    '************************************************************************
    '* If we got this far we can't have had an error so remove document . . .
    '************************************************************************
    Kill uPrintJob.PCLPath

    Exit Sub
   
ERR_Prnt:
    App.LogEvent "The following error has occured in " & MODULE_NAME & "IPrinter_Prnt]:" & vbCr & _
    "Number: " & Err.Number & vbCr & _
    "Source: " & Err.source & vbCr & _
    "Description: " & Err.Description, vbLogEventTypeError
    Err.Raise Err.Number, Err.source, Err.Description, Err.HelpFile, Err.HelpContext
End Sub

---

... raises the above error "This window has already been registered as a drop target"

I've googled, and don't even understand what the error message is!

Any thoughts?