diff --git a/scripts/KANBAN-Rational-Druck/KANBAN-Rational-Druck.ps1 b/scripts/KANBAN-Rational-Druck/KANBAN-Rational-Druck.ps1
index e2d613c..5ecfb8a 100644
--- a/scripts/KANBAN-Rational-Druck/KANBAN-Rational-Druck.ps1
+++ b/scripts/KANBAN-Rational-Druck/KANBAN-Rational-Druck.ps1
@@ -107,7 +107,7 @@ function Start-SelfUpdateIfNeeded
             return
       }
 
-      $localScriptPath = $MyInvocation.MyCommand.Path
+      $localScriptPath = $PSCommandPath
       if ([string]::IsNullOrWhiteSpace($localScriptPath))
       {
             throw "❌ Lokaler Skriptpfad konnte nicht ermittelt werden."
@@ -142,13 +142,14 @@ function Start-SelfUpdateIfNeeded
             Set-Content -Path $tempUpdatedScript -Value $remoteContent -Encoding UTF8
 
             Copy-Item -Path $tempUpdatedScript -Destination $localScriptPath -Force
+            Remove-Item -Path $tempUpdatedScript -Force -ErrorAction SilentlyContinue
 
             Write-ConsoleLog "✓ Lokales Public-Skript wurde aktualisiert." "SUCCESS"
             Write-ConsoleLog "Starte aktualisierte Version neu..." "INFO"
 
             $argumentList = @(
                   '-ExecutionPolicy', 'Bypass',
-                  '-File', ('"{0}"' -f $localScriptPath),
+                  '-File', $localScriptPath,
                   '-SkipSelfUpdateCheck'
             )
 
@@ -265,7 +266,7 @@ function Invoke-SqlTopOneQuery
             [string]$Belegnummer
       )
 
-      $SqlPasswordEncode = [System.Text.Encoding]::UTF8.GetString(
+      $sqlPasswordPlain = [System.Text.Encoding]::UTF8.GetString(
             [System.Convert]::FromBase64String($Config.SqlPassword)
       )
 
@@ -275,7 +276,7 @@ function Invoke-SqlTopOneQuery
             $Config.SqlServer,
       $Config.SqlDatabase,
       $Config.SqlUser,
-      $SqlPasswordEncode
+      $sqlPasswordPlain
 
       $connection = New-Object System.Data.SqlClient.SqlConnection
       $connection.ConnectionString = $connectionString
@@ -437,6 +438,7 @@ try
                   {
                         New-Item -Path $fallbackFolder -ItemType Directory -Force | Out-Null
                   }
+
                   $script:LogFilePath = Join-Path $fallbackFolder ("KANBAN-Rational-Druck_{0}.log" -f (Get-Date -Format 'yyyy-MM-dd'))
             }