PowerShell FTP upload not working - Creating zero byte file

I am working on a PowerShell script that is run from another application that is called after a success event and executes a series of commands:

1. First it zips a designated file (ExampleFile)
2. Then deleted the original
3. Uploads the zipped file to a server through FTP

My problem starts during the FTP process: as it exists below - the ZIP file is created correctly in the local system, and a ZIP file is created on the FTP server but it's stuck with a filesize of 0 bytes.

From the server, it looks like the upload hangs?

So: Lines 1-3 all work fine and the local zipped file has a non-zero size.

Add-Type -A 'System.IO.Compression.FileSystem';
[IO.Compression.ZipFile]::CreateFromDirectory("ExampleFolder\ExampleFile", "ExampleFolder\ExampleFile_Datestamp.zip");
Remove-Item -Recurse -Force "ExampleFolder\ExampleFile"; 

$Username = "exampleusername"; 
$Password = "examplepassword";
$LocalFile = "C:\Users\example_path\ExampleFolder\ExampleFile.zip";
$RemoteFile = "ftp://exampleserver/examplepath2/ExampleFile_Datestamp.zip";

$FTPRequest = [System.Net.FtpWebRequest]::Create("$RemoteFile");
$FTPRequest = [System.Net.FtpWebRequest]$FTPRequest; 
$FTPRequest.Method = [System.Net.WebRequestMethods+Ftp]::UploadFile;
$FTPRequest.Credentials = new-object System.Net.NetworkCredential($Username, $Password); 
$FTPRequest.UseBinary = $true; 
$FTPRequest.UsePassive = $true; 

$FileContent = gc -en byte $LocalFile; 
$FTPRequest.ContentLength = $FileContent.Length; 

$Run = $FTPRequest.GetRequestStream(); 
$Run.Write($FileContent, 0, $FileContent.Length); 
$Run.Close(); 
$Run.Dispose();

This has me pretty well stumped, so any ideas or thoughts appreciated.

powershell.exe -nologo -noprofile -command "Add-Type -A 'System.IO.Compression.FileSystem'; [IO.Compression.ZipFile]::CreateFromDirectory(\"ExampleFolder\ExampleFile\", \"ExampleFolder\ExampleFile_Datestamp.zip\"); Remove-Item -Recurse -Force \"ExampleFolder\ExampleFile\"; $Username = \"exampleusername\"; $Password = \"examplepassword\"; $LocalFile = \"C:\Users\example_path\ExampleFolder\ExampleFile.zip\"; $RemoteFile = \"ftp://exampleserver/examplepath2/ExampleFile_Datestamp.zip\"; $FTPRequest = [System.Net.FtpWebRequest]::Create(\"$RemoteFile\"); $FTPRequest = [System.Net.FtpWebRequest]$FTPRequest; $FTPRequest.Method = [System.Net.WebRequestMethods+Ftp]::UploadFile; $FTPRequest.Credentials = new-object System.Net.NetworkCredential($Username, $Password); $FTPRequest.UseBinary = $true; $FTPRequest.UsePassive = $true; $FileContent = gc -en byte $LocalFile; $FTPRequest.ContentLength = $FileContent.Length; $Run = $FTPRequest.GetRequestStream(); $Run.Write($FileContent, 0, $FileContent.Length); $Run.Close(); $Run.Dispose();