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Formatting help

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format text bold: [b]bold text[/b]
format text italic: [i]italic text[/i]
insert hyperlink: [link=http://example.com/]link text[/link] / [link]http://example.com/[/link]
set text color: [color=#rgb]colored text[/color]
font size: [size=small]small text[/size]; [size=large]large text[/size]
insert list: [list][*]list item[/list]
insert image: [img]http://example.com/image.jpg[/img]; left: [img=left]http://example.com/image.jpg[/img]; right: [img=right]http://example.com/image.jpg[/img]; thumbnail: [img=thumbnail]http://example.com/image.jpg[/img]; thumbnail left: [img=thumbnail-left]http://example.com/image.jpg[/img]; thumbnail right: [img=thumbnail-right]http://example.com/image.jpg[/img]

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Message:

> Hi there
> 
> Following code works usually fine. In very rare cases it leads to a NullReferenceException inside of the PutFile call at a customer installation for no obvious reasons. We're using Version 1.8.3.247. Thanks for any hints.
> 
> Here's the exception:
> 
> System.NullReferenceException: Object reference not set to an instance of an object.
>    at A.a.n()
>    at WeOnlyDo.Client.FtpDLX.PutFile(String LocalFile, String RemotePath)
> 
> Here's the code. In reality filename changes each time:
> 
> using WeOnlyDo.Client;
> 
> string filename = "Test.pdf";
> string localdir = @"C:\temp\";
> string remotedir = @"/Upload/";
> 
> using (var ftp = new FtpDLX())
> {
>     ftp.LicenseKey = "#####";
> 
>     // We don't want to do complex event handling.
>     ftp.Blocking = true;
> 
>     ftp.Protocol = Protocols.FTP;
>     ftp.Hostname = "#####";
>     ftp.Port = 21;
>     ftp.Authentication = Authentications.Password;
>     ftp.Login = "#####";
>     ftp.Password = "#####";
>     ftp.Passive = false;
>     ftp.KeepAlive = 0;
>     ftp.Timeout = 0;
>     ftp.Resume = false;
>     
>     ftp.Connect();
> 
>     ftp.Timeout = 0;
>     ftp.ListNames(remotedir);
>     
>     List<string> files = new List<string>();
>     foreach (string file in ftp.ListItem.Split(Environment.NewLine.ToCharArray(), StringSplitOptions.RemoveEmptyEntries))
>     {
>         files.Add(file.ToLowerInvariant());
>     }
>     
>     if (!files.Contains(filename.ToLowerInvariant()))
>     {    
>         ftp.CheckDir(remotedir);
>         ftp.PutFile(Path.Combine(localdir, filename), remotedir + filename);
>     }
>  }

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