FrmForm1.Show V. FrmForm1.Show Dialog?

As a continuation of my previous posting, which we were able to resolve, I am running into the same problem again, due to being unable to use frmForm1.Show().In my last situation I had to use frmForm1.ShowDialog(), which worked in that case, as it called another form, for example frmForm2.However, now I have a program that is sometimes required to recal frmForm1, and I get the following message: �Close the form before calling ShowDialog.But, in frmForm1,I include, Me.Hide() and Me.Close(). Also, before recalling frmForm1, from a procedure under Main(), I have added the following

frmForm1.Close()

To me that would suggest the form is closed, dead and buried, but the programme still stops at the point of:

frmForm1.ShowDialog()

With the same message: �Close the form before calling ShowDialog.