This is not an error I have seen before, only shows up when trying to Publish or Save a workflow.
- SharePoint Designer Workflows are publishing and ruining ok
- Account is Site Collection Administrator
- Opening existing Nintex workflows on the site just show up as blank (no error message on designer)
- Existing Nintex workflows are running ok (but can't edit them as above)
- Can't create any new Nintex workflows
anyone had this before, just about to reinstall Nintex WF app on the site