Error message in Lookout

Hi, we have a version 6.7 of lookout and are trying to migrate our data from an older version of lookout (6.0). We are getting an error message. I have attached to this post. If anyone has any idea how to resolve, i could use the help. Also need to know what other files i need to copy over from the older version of lookout to the new system to make sure the migration works fine.