SharePoint 2013 SP1 with August 2016 CU, Nintex workflow enterprise On our Dev server, the list of conditions for Set-Condition and Run-if actions display as an empty drop-down as shown
The license checks
All actions are enabled
Permissions are set for everyone.
The web application activation page offers the option to activate the feature, but it seems to be activated and the same is true for the QA and Production tiers which are working fine.
A random test of other actions seems to indicate they are working.
I inherited this server, and have no knowledge of the setup other than what I can see in Central Admin.
Any and all ideas will be most appreciated.