Venus will not launch; NUCLEUS Shuts down; MSSQL conflict with MySQL

Potential Symptoms

  • Venus will not launch.
  • Nucleus service will immediately stop after manual start.
  • Venus splash / load screen flickers back and forth between "starting service" and "Loading service".
  • Error log may show: 
    Exception: System.IO.FileNotFoundException: Could not load file or assembly 'MySql.ConnectorInstaller, Version=, Culture=neutral, PublicKeyToken=c5687fc88969c44d' or one of its dependencies. The system cannot find the file specified.
    File name: 'MySql.ConnectorInstaller, Version=, Culture=neutral, PublicKeyToken=c5687fc88969c44d'
       at System.Web.Security.Roles.Initialize()


  • Product Family: Software
  • Product: Venus 1500
  • Component: Daktronics Nucleus Server service; MSSQL
  • Control System: Venus 1500


  • Another database software (MySQL) has been installed along side of MSSQL and is causing the Nucleus Server service to shut down.


  • Inform the EU of the conflict. Uninstall the conflicting software.

For Temporary Operation

  • Install Venus 1500 to another computer.

KB ID: DD4601325

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