Hi @eenglish,
What are version of the Zoo you are using? And what is the version of Rhino the user is running?
Is this something you can repeat?
If the user is “down”, you can do the following to get him up and running:
1.) Close Rhino 6
2.) Navigate to %APPDATA%\McNeel\Rhinoceros\6.0\License Manager\Licenses
3.) Delete the 55500d41-3a41-4474-99b3-684032a4f4df.chk file.
4.) From the Zoo console, pick the checkout license and click Edit > Recover.
5.) Restart Rhino 6
– Dale