weird cookie expiration issue

Hi,  

We are running our quest jobs through the command line.  However we keep getting the error below.  What is this Cookie Expiration?  I was thinking maybe it is the thing preventing us from the migration.  

General: [General] Cookie Expiration, Cookies expire 10/11/2017 9:06:23 PM 
Migration Failed: Could not load file or assembly 'Quest.NSP.Transform.Notes' or  one of its dependencies. The system cannot find the file specified. 

thanks.