I am in need of a helping hand: In a Sharepoint 2013 System there are a couple of Nintex List Workflows that work correctly and have been edited (and published) several times in the past. Now is no longer possible to edit them.
These workflows are correctly shown under "Workflow Inventory". When selecting any of them, it is possible to see the different steps and actions
But as soon as I click on "Edit Workflow", I receive the error ErrorCannot open file "XXXXXX/Forms/Nintex_AutoStartRules.xml" and the Workflow editor appears completely empty (XXXXX is the name of the Library where the List Workflow is stored)
If I try to open the Workflow by clicking on "Open" Button (on the Ribbon) the result is exactly the same
The current editing user is the same one that created and edited (several times) the Workflow in the past. I have also tried with another user that is Site Collection Administrator. Same result.
Exporting and importing the Workflows again was of no help either.
I am currently desperate and I would be thankful to know if anyone has experience with this issue and/or any idea what is happening here. Thank you in advance for your help!