vb visual fortran dll file error

vb visual fortran dll file error

I have some code running where my vb code runs from a button click
It calls a fortran dll where I used a file creation to check some things
It runs fine if I keep clicking the button, but if I close the vb form and try
to rerun it, I get the following error
forrtl: severe (30): open failure, unit 2, file c:JackVisualFortran...fort.2
I feel I have seen this before in the distant past with a vax compiler and
I don't remember what is going on
I am closing unit 2 in the fortran file, Is it remaining open when I close the vb form?
Thanks for any comments
JGeorge

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