El Cap migration assistant quits if my user agent is running

User agent is unchanged since Tiger, works find on Sierra, too.



Precious little in the logs to tell me what is going on.


Oct 18 11:03:02 Jims-Mac-mini authexec[1099]: executing /Applications/Utilities/Migration Assistant.app/Contents/Resources/MigrateTool

Oct 18 11:03:02 Jims-Mac-mini MigrateTool[1099]: ------

Oct 18 11:03:02 Jims-Mac-mini spindump[521]: Got xpc error message in libspindump client connection: Connection invalid

Oct 18 11:03:02 Jims-Mac-mini MigrateTool[1099]: -logoutToMigrationBuddy

Oct 18 11:03:02 Jims-Mac-mini Migration Assistant[1096]: terminating assistant implicitly - passed the last section without encountering a finishing page


Has anyone else run into this and understand why El Cap is unhappy?