When you installing Nintex Workflow 2013 in your sharepoint 2013 server, After installed the installer and Deployed the Nintex Workflow WSP then open the Nintex Workflow Management, It will throw in the below error
The located assembly’s manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040)
If you come across the aboveerror while clicking the “Nintex Workflow Management” in Central Admin, Reset IIS