Uploading Files to a libary in Sharepoint 3.0 with Powershell

Hi, I have trawled the net looking for ways to automate uploads of a doc and docx files from a folder and have them uploaded to the sharepoint document libary, here is a script we used to use a while back, but doesnt seem to work anymore as i recieve this error

D:\Upload>powershell gci D:\Upload\*.doc | upload.ps1
New-Object : Exception calling ".ctor" with "1" argument(s): "The Web applicati
on at http://iccintranet/it/Knowledge%20Base could not be found. Verify that yo
u have typed the URL correctly. If the URL should be serving existing content,
the system administrator may need to add a new request URL mapping to the inten
ded application."
At D:\Upload\upload.ps1:8 char:18
+  $site=new-object  <<<< Microsoft.SharePoint.SPSite($docliburl)
You cannot call a method on a null-valued expression.
At D:\Upload\upload.ps1:9 char:20
+  $web=$site.openweb( <<<< $relweburl)
You cannot call a method on a null-valued expression.
At D:\Upload\upload.ps1:10 char:24
+  $folder=$web.getfolder( <<<< $docliburl)
Cannot index into a null array.
At D:\Upload\upload.ps1:11 char:19
+  $list=$web.lists[$ <<<< folder.ContainingDocumentLibrary]
Get-Content : Cannot bind argument to parameter 'Path' because it is null.
At D:\Upload\upload.ps1:18 char:20
+  $bytes=get-content  <<<< $_ -encoding byte
You cannot call a method on a null-valued expression.
At D:\Upload\upload.ps1:20 char:19
+  $folder.files.Add( <<<< $_.Name,$bytes,$propbag, $true) > $null


Here is the code


If anyone has another example I could try,
By the way it was working on 32bit Windows and we are currently running 64bit server 2008

Thanks

begin
{
 $propbag=@{ContentType=Document
                       MyCol =PowerShell About Docs }
 $docliburl=http://iccintranet/it/Knowledge%20Base
 $relweburl=/it/Knowledge%20Base
 [System.Reflection.Assembly]::LoadWithPartialName(Microsoft.SharePoint) > $null
 $site=new-object Microsoft.SharePoint.SPSite($docliburl)
 $web=$site.openweb($relweburl)
 $folder=$web.getfolder($docliburl)
 $list=$web.lists[$folder.ContainingDocumentLibrary]
} 

process
{ 

 ## I expect FileInfo objects in the pipeline
 $bytes=get-content $_ -encoding byte
 $bytes=[byte[]]$bytes
 $folder.files.Add($_.Name,$bytes,$propbag, $true) > $null
}

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