Created Unassigned: Printer Dialog Showing [2351]

Hi,
I'm using the latest NuGet of GS.Net ( 1.2.1 ) and I think I have all the parameters correct but it still keeps showing the dialog.

If I run the command (that I log ex: bellow ) in the cmd with the gswin64c it runs as it supposes to, so my guess is that the parameters are correct.

My code is :
```
var gsVi = GhostscriptVersionInfo.GetLastInstalledVersion();

if (gsVi == null)
throw new Exception("GhostScript instalation not found.");

_gsP = new GhostscriptProcessor(gsVi, false);
List<string> gsArgs = new List<string>
{
"-empty",
"-dBATCH",
"-dNOPAUSE",
"-dNOSAFER",
"-dPrinted",
"-dNumCopies=1",
$"-sDEVICE={printDevice}",
$"-sOutputFile=\"%printer%{printerName}\"",
"-f",
filePathToPrint
};
try
{
WriteOutput("GHOSTSCRIPT NET - " + string.Join(" ", gsArgs));

OutputStdIo cstdio = new OutputStdIo(true, true, true);

_gsP.Process(gsArgs.ToArray(), cstdio);

WriteOutput("cstdio " + cstdio.Output);
}
catch (GhostscriptAPICallException gs)
{
// Can throw if user cancel Printer dialog - "An error occured when call to 'gsapi_init_with_args' is made: -100"
// Can throw if arguments wrong
WriteOutput(gs);
}
```


and it outputs this (if I don't cancel in the printer dialog):

```
_______________________________________________________
:: APP :: 02/07/2017 18:10:59 ---------------
GHOSTSCRIPT NET - -empty -dBATCH -dNOPAUSE -dNOSAFER -dPrinted -dNumCopies=1 -sDEVICE=mswinpr2 -sOutputFile="%printer%EPSON" -f C:\Jobs\3bf268fa3dc343af831b5dc7a9df1b49\Job.ps

_______________________________________________________
:: APP :: 02/07/2017 18:11:01 ---------------
cstdio GPL Ghostscript 9.19 (2016-03-23)
Copyright (C) 2016 Artifex Software, Inc. All rights reserved.
This software comes with NO WARRANTY: see the file PUBLIC for details.
Loading NimbusMono-Regular font from %rom%Resource/Font/NimbusMono-Regular... 4380408 2855111 1554744 270788 1 done.
%%[ ProductName: GPL Ghostscript ]%%
%%[Page: 1]%%
%%[LastPage]%%
```