This error message means that the update did not finishing downloading to your workstation from the GUAPPLE.  To correct, follow the steps in this KB article:

https://kb.cuanswers.com/cuanswers/consumer/kbdetail.asp?kbid=3760

Alternatively, you can delete the file C:\CUBASE\GOLD\cubase.jwr and relaunch GOLD to force another update.