Can't Show Non-Modal Form...........!

[arpan_de]

In a WebBrowser project, I have given users the option to set their default browser to my browser i.e. whenever any HTML file is opened in Windows Explorer, the HTML file should open with my browser. The project also houses a CheckBox for the browser to check whether it is the default browser or not. If not, then when the browser is run on the first time, a MsgBox should come up asking the user if he would like to set my browser as the default browser in his machine. If Yes, then my browser will be set as the default browser in that machine else the existing default browser will remain the default browser. This is how I am checking whether my browser is the default browser or not (NOTE: This is not my code):

Private Sub Form_Load()
    If (frmBrowserOptions.chkDefault.Value = vbChecked) Then
        Call CheckDefault
    End If
End Sub
 
Private Sub CheckDefault()
    Dim success As Long
    Dim sBrowser As String
   
    'success is passed and filled in the routine
    sBrowser = GetBrowserName(success)
   
    'possible return values from the call returned in success
    Select Case success
    'the call succeeded
        Case Is >= ERROR_FILE_SUCCESS
            If (InStr(sBrowser, "MyBrowser.exe") = 0) Then
                If (vbYes = MsgBox("MyBrowser not default browser! Set it as default?", vbYesNo + vbQuestion)) Then
                    Call frmBrowserOptions.cmdDefault_Click
                End If
            End If
            Exit Sub
        'other possible return values
        Case ERROR_FILE_NO_ASSOCIATION
        Case ERROR_FILE_NOT_FOUND
        Case ERROR_PATH_NOT_FOUND
        Case ERROR_BAD_FORMAT
        Case Else
    End Select
End Sub
 
Private Function GetBrowserName(dwFlagReturned As Long) As String
    Dim hFile As Long
    Dim sResult As String
    Dim sTempFolder As String
        
    'get the user's temp folder
    sTempFolder = GetTempDir()
   
    'create a dummy html file in the temp dir
    hFile = FreeFile
    Open sTempFolder & "dummy.html" For Output As #hFile
    Close #hFile
 
    'get the file path & name associated with the file
    sResult = Space$(MAX_PATH)
    dwFlagReturned = FindExecutable("dummy.html", sTempFolder, sResult)
  
    'clean up
    Kill sTempFolder & "dummy.html"
   
    'return result
    GetBrowserName = TrimNull(sResult)
End Function
 
Private Function TrimNull(Item As String)
    Dim pos As Integer
    pos = InStr(Item, Chr$(0))
    If pos Then
        TrimNull = Left$(Item, pos - 1)
    Else
        TrimNull = Item
    End If
End Function
 
Public Function GetTempDir() As String
    Dim nSize As Long
    Dim tmp As String
    tmp = Space$(MAX_PATH)
    nSize = Len(tmp)
    Call GetTempPath(nSize, tmp)
    GetTempDir = TrimNull(tmp)
End Function
 
'this is the [i]cmdDefault_Click[/i] event function in another Form named [i]frmBrowserOptions[/i]
Sub cmdDefault_Click()
    ......................
    ......................
    ......................
End Sub

Assume that my browser is not the default browser. Now when I run the browser from the IDE, the MsgBox asking the user whether he would like to set my browser as the default browser or not comes up as expected but when I compile the project into an EXE & then open my browser (again assuming that my browser isn't the default browser), though the MsgBox comes up but immediately after that, VB generates the Can't show non-modal form when modal form is displayed.

Next irrespective of whether I click Yes or No in the MsgBox, the following error gets generated:

An exception 'Unhandled Win32 Exception' has occured in MyBrowser.exe.

However, no debuggers are registered that can debug this exception. Unable to JIT debug.

After this, the browser closes. Now how do I avoid these 2 errors when I run the EXE? Please note that these 2 errors don't get generated when I run the project from the VB IDE.