Dear Ruopeng,

I have the same problem with missing toolbars in freeView, however I am not successful with command

defaults delete edu.harvard.mgh.nmr.FreeView

The command shows:

defaults delete: couldn't remove non-existent domain edu.harvard.mgh.nmr.FreeView

My command 

defaults domains

shows only NSGlobalDomain - There is no FreeView defaults domain.

I am using freeView version 1.0.

Regards,

Antonin Skoch