I have PowerShell scripts set up to refresh extracts on our Tableau server.  These scripts are kicked off via our scheduling app, ASG ZENA, after its parent process completes.  I have had this working for awhile now, but I've had to edit the script to point to a different site (but still on the same server).  Now I receive an error saying "Cannot sign in because of missing arguments: --username,--certificate,--server".  As you can see in my script below, the information is provided during the 'login' process.  Can someone provide some insight?

# Set Tableau Parameters
$ErrorLevel = $LASTEXITCODE
$user = 'username'
$server = 'tableau.company.com'
$site = 'company site'
$project = 'project name'
$datasource = 'data source name'
$ZENA = 'ZENA task name'

# Set Email Notification Parameters
$PSEmailServer = 'mail.company.com'
$NoReply = 'NoReplyTableau@company.com'
$ToEmail = 'user@company.com'
$TabAdmin = 'TableauAdmin@company.com'
$SuccessSubject = $ZENA + '-' + $datasource + 'Refresh Completed Successfully'
$FailureSubject = $ZENA + '-' + $datasource + 'Refresh Failed'
$FBody = $datasource + ' failed to refresh.  Please contact TableauAdmin@company.com'

# Read Secure Password from File and Return Plain Text
function ConvertFrom-SecureToPlain {
$TabcmdPassword = get-content 'D:\pathtopasswordfile\storedPassword.txt' | Convertto-SecureString
$credential = new-object system.management.automation.pscredential($user,$TabcmdPassword)
$TabcmdPassword = $credential.getnetworkcredential().password
Return $TabcmdPassword    
}
$TabcmdPassword = ConvertFrom-SecureToPlain

# Set the Tabcmd Directory
$TabCmd = "D:\Program Files\Tableau\Tableau Server\9.3\bin\tabcmd.exe"
# Log into the Server and Site
& $TabCmd login -s $server -t $site -u $user -p $TabcmdPassword --no-certcheck 

# Refresh Relevant Extracts and Log Out
& $TabCmd refreshextracts --project $project --datasource $datasource --synchronous --no-certcheck
$ErrorLevel = $LASTEXITCODE
& $TabCmd logout

# Send Appropriate Failure or Success Email Based on LASTEXITCODE
if ($ErrorLevel -eq 0)
 {
 Send-MailMessage -From $NoReply -To $ToEmail -Subject $SuccessSubject
  exit 0
 }
 else
 {
  Send-MailMessage -From $NoReply -To $ToEmail -Cc $TabAdmin -Subject $FailureSubject -Body $FBody
 exit 1
 }