Has anyone submitted a tech support call? If so, could you post the incident number?
I can't make this happen on my machine, and nobody here within Esri has ever encountered it, so I'd like to better understand the circumstances that make it happen.
Can anyone provide further details?
-What license do you currently have (basic, standard, advanced - floating or single use)?
-Does your license expire? If so, is it near expiring?
-This error ONLY happens with 64 bit BG installed and executing tools there? (or 32bit Background, or Foreground, or?)
-Any particular tools, or ALL tools?
-Do you have other Esri software installed (Engine, Server, etc)?