After responding to a notification that a new update was available, the update was applied and CCSv10 attempted to restart, but the result was the display of two dialogs: (1) a dialog entitled "Setup" with an empty progress bar and NO text, and (2) a dialog entitled "Error" with the text:
There has been an error.
Error processing regular expression /(nickname|name)=***unknown variable updatename***
and an "OK" button.
There is no indication as to what file is being processed when the error occurs.
There appears to be no way to use CCSv10 at this point.