ftp using powershell

I've tried a couple of different scripts I've found online, and I thought I had one working, but find myself back at square one.
I landed on this one today, ran it from my workstation, pointing to the remote file, and it worked.
I placed the script on the server, where it will be automated, and it writes the data, but once the rs closes, the file is gone...I have no idea why?
$ftpFile = 'ftp://destination/folder/filename.csv'
$ftp = [System.Net.FtpWebRequest]::Create($ftpFile)
$ftp = [System.Net.FtpWebRequest]$ftp
$ftp.Method = [System.Net.WebRequestMethods+Ftp]::UploadFile
$ftp.Credentials = new-object System.Net.NetworkCredential('xxxxxxx',xxxxxx') 
$ftp.UseBinary = $true
$ftp.UsePassive = $true
$content = [System.IO.File]::ReadAllBytes($file)
$ftp.ContentLength = $content.Length
$rs = $ftp.GetRequestStream()
$rs.Write($content, 0, $content.Length)
$rs.Close()
$rs.Dispose()

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sirbountyAsked:
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Dustin SaundersConnect With a Mentor Director of OperationsCommented:
Your code works fine for me.  Are you sure it's being deleted (actually in the FTP folder)?  Some FTP rights might not let you see the files that exist depending on permissions.
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Dustin SaundersDirector of OperationsCommented:
Where are you defining $file?
$content = [System.IO.File]::ReadAllBytes($file)

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sirbountyAuthor Commented:
via a parameter in my function.
It's a string value of the source file's location on the local server.
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sirbountyAuthor Commented:
Yeah, I'm using the same credentials to the ftp, from both devices.
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Dustin SaundersDirector of OperationsCommented:
Hmm...  I can't get it to replicate.  What OS is it running on when having the issue?  As a scheduled task?

So you can see the file with the correct file size then it vanishes. correct?  Does it delete itself after .dispose or after .close (can you add 'start-sleep -s 10' between each of those commands to see at what point it does the deletion?)
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sirbountyAuthor Commented:
It runs as a task, yes, on a 2k8r2 server.  But running it manually on that server still fails.
On my Win7 desktop, it worked.  However, I need to ensure I'm using the exact code in both environments - there may have been some slight tweaks when transferring.
I'll run again and see.

As to the last question - I think it was at the dispose - I'll step through the code waiting 10 seconds and see what happens.  Thanks for the suggestions.
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sirbountyAuthor Commented:
Nope, it happened after close() was sent...weird.  I'll try waiting longer.
At the $rs.write... the file is currently 'there', but with 0 bytes.  I'm going to let it sit here for a while and check it later.
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sirbountyAuthor Commented:
At $rs.write...
ftp> ls -l
200 PORT command successful.
150 Opening ASCII mode data connection for file list.
total 2
-rw-rw-rw- 1   root            root    0       Oct 24 07:03 filename.csv
226 Transfer complete.
ftp: 102 bytes received in 0.01Seconds 11.33Kbytes/sec.

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After waiting a bit...
ftp> ls -l
200 PORT command successful.
150 Opening ASCII mode data connection for file list.
total 16834
-rw-rw-rw- 1   root            root    13680039 Oct 24 07:04 filename.csv
226 Transfer complete.
ftp: 107 bytes received in 0.02Seconds 4.65Kbytes/sec.

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After waiting a bit longer...
ftp> ls -l
200 PORT command successful.
150 Opening ASCII mode data connection for file list.
total 16834
-rwxr-xr-x 1   30001           30000   13680268 Oct 24 07:08 filename.csv
226 Transfer complete.
ftp: 107 bytes received in 0.03Seconds 4.12Kbytes/sec.

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At this point, if I try $rs.close(), it throws an exception (remote server returned Page type unknown)
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Dustin SaundersDirector of OperationsCommented:
What about the FTP server, what platform/software is it?  Do you know if there is a file size limit?

If you test with a small 1kb text file does it work?
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sirbountyAuthor Commented:
I don't know much about the target server.  I'll need to contact that area to find out more, but yes I can try with a 1k file.
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sirbountyAuthor Commented:
I'll just add the sleep to the process - thanks for the help
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