I'm new to Powershell and trying to use HTTRack to produce a folder with a
scrape of various sites on a monthly basis. 
I can get the POWERSHELL to invoke HTTrack, but HTTrack returns a File Not
Found. I cannot figure out my issue. 

clear-host
write-output "---------------------Script Start--------------------";
write-output " HTTrack Site Backup Powershell Script"
write-output "-------------------------------------------------------";
 
# get timestamp
$timestamp = Get-Date -format yyyy_MMM_dd_HHmmss
write-output "The current time is $timestamp."


# invoke HTTrack
$HTTrackPath="C:\WinHTTrack\WinHTTrack.exe"
write-output "This PowerShell script is invoking HTTrack at $HTTrackPath."


# creates output directory if it doesn't already exist 
$local = Get-Location;


$TargetFolderPath = "C:\PowershellTest\test-$timestamp"
if(!$local.Equals("C:\"))
{
    cd "C:\";
    if((Test-Path $TargetFolderPath) -eq 0)
    {
        mkdir $TargetFolderPath;
        cd $TargetFolderPath;
        write-output "Created Output directory at $TargetFolderPath."        
    }    
   }
# end create directory

 
# set error action preference so errors don't stop and the trycatch 


# set website source
$sourceSite = <http://www.doc.state.mn.us>

# Specify EventLog Source
if ([System.Diagnostics.EventLog]::SourceExists("WinHTTrackScript") -eq
$False) {
    New-EventLog -LogName "Network" -Source "WinHTTrackScript"
   }
#End Specify EventLog Source   



# Test that file was created accurately by copying a file from another folder.
This has NOTHING to do with HTTrack- Just a test to make sure path is correct
$copyItem ="c:\WinHTTrack\unrestricted.txt"
Copy-Item  $copyItem $TargetFolderPath
write-output "Test file copied $copyItem to $TargetFolderPath" 
# End Test file creation- This has NOTHING to do with HTTrack- Just a test to
make sure path is correct


try
{     
    write-output "Downloading data ..."
    
    invoke-expression "$HTTrackPath $sourceSite -O $TargetFolderPath"   
     
    write-eventlog -LogName "Network" -Source "WinHTTrackScript" -EventId 1
-Message "Downloaded site for backup"
     
}
catch
{
    # error occurred so lets report it
    write-output "ERROR OCCURRED DURING SCRIPT " $error
 
    # write an event to the event log
    write-output "Writing FAIL to EventLog"
    write-eventlog -LogName "Network" -Source "WinHTTrack" -EventId 1 -Message
"Download for backup FAILED during execution. $error" -EntryType Error
}