While unloading a form using set frm = nothing the form reloads any ideas why?

Hi

I have several routines to unload an application. The main window is called frm_toolbar. All unloaded fine until I added a timer, I've added code to close the timer before unloading the form and this appears to work ok. But the main form is not unloading, it appears to close but is still running in the background.

If I add set frm_toolbar = nothing the form closes then reloads, if I then clock close it closes and unloads fine. Here is the code I use to initiate the close routines

If unload_main = True Then
Cancel = 0
Else
Cancel = 1
End If

Any ideas appreciated, this is a tricky one.

this is the unload main reoutine. it closes a couple of folders, exits the loop via a exitloopas boolean variable
 
Source = frm_toolbar.Label3.Caption
 
'write the current preset calibration value to the ini file
 
preset_cal = frm_toolbar.txtprecals.text
 
Call WritePrivateProfileString("Calibration", "Pre_set", preset_cal, filename)
Call WritePrivateProfileString("Calibration", "source", Source, filename)
 
'delete the temporary file in the application data folder
 
If IspathExist(temp_folder) Then
 
Dim fso As New FileSystemObject
Set fso = CreateObject("Scripting.FileSystemObject")
fso.GetFolder (temp_folder)
fso.DeleteFolder (temp_folder), False
 
'Kill temp_folder
End If
 
'delete the temporary file in the application data folder
 
If IspathExist(temp_folder2) Then
 
Set fso = CreateObject("Scripting.FileSystemObject")
fso.GetFolder (temp_folder2)
fso.DeleteFolder (temp_folder2), False
 
End If
 
 'close the open version of image pro
 
AppActivate image_pro
  Wait 1
SendKeys "%{F4}", True
Wait 0.1
 
    exitloop = True
    frm_toolbar.Timer1.Interval = 0
    frm_toolbar.Timer1.Enabled = False
 
 
 'ensure that all the form have been unloaded
 
 Dim i As Integer
   For i = Forms.count - 1 To 0 Step -1
      Unload Forms(i)
      Set Forms(i) = Nothing
   Next
   
Exit Function

Select allOpen in new window