I had just finished up with installing a new SharePoint 2013 web farm with Nintex workflow and activate the web apps in SharePoint Central Admin.
Also activated it in site collection and site feature but anytime i try to publish a workflow i get this error
"server was unable to process request failed to publish workflow"
Looked at the logs and was throwing some assembly errors.
Anyway after looking through the admin section in Central Admin i found > Nintex workflow Management > Web Application Activation
Resolution
Using the Farm
Installation account or another account with sufficient permissions,
activate all web applications that use Nintex Workflow.
To activate web applications for Nintex Workflow
- On the Central Administration Home page, click Nintex Workflow Management.
- Click Web Application activation.
The default web application name is automatically selected. - To activate all web applications for Nintex Workflow, select the check box for All content web applications and then click Activate.
- To activate a subset of web applications for Nintex Workflow, select each web application and then click Activate; repeat until all desired web applications have been activated.
Hope this helps