[RESOLVED] VB.NET Error while printing

[Tedioboy]

Hi there!

I've got problems while printing a document.
I've got a program that have a small form with options for printing two diferent pages. Here's the code:





There is a Button for printing named Imprimir and two checkboxes for selecting what king of display I want to send to printer.

At first time, there are no problems, the printer prints what I want, the form closes and it seems all is allright. The problem is when I try to print again, even the same layout, I call the print form again and I get the error in the picture...

What am I doing wrong?
Why the same routine executes without problem at first instance and gives this error at second instante?

Thanks in advance.

Best regards.

Tedioboy, from Portugal.