I have an addin which displays a form, then when I clic a button operations are launched.
The form is no modal, so I display it, select objects, apply, selct objects, apply,... then close the form with another button (form.close).
All functions, but only on the first opend file : I open the file, use the addin, close the form. I open another file, the addin is always loaded, but when I clic on the icon to display the form nothing happens... I have to unload the addin and reload it.