SharePoint Designer 2010 Error – Unexpected error on server associating the workflow

If you are experiencing this error try running this command.

For SharePoint 2010

Write-Host “Increasing Workflow parameter UserDefinedWorkflowMaximumComplexity…”

$app = get-spwebapplication http://SharePointWebSiteXXX
$app.UserDefinedWorkflowMaximumComplexity = 20000
$app.Update()

Adding SharePoint 2010 PoweShell cmdlets to your PowerShell ISE
cd ‘C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\CONFIG\POWERSHELL\Registration’.\SharePoint.ps1