I can repeat this and will report it as an issue to the TBC Development team. The external services profile allows you to set up login credentials for an external service. You shouldn't need it for Connect because you should be logging into TBC with the Trimble ID as you use for connect. So I don't know why this external service profile error is appearing.
As a work around until this issue is resolved I would recommend you use Trimble Sync Manager to update the files to connect.
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James McWha
Asia Pacific Regional Support Manager, Geospatial
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