msl problem with 5.16 firmware and netvault linux backup application

[john briggs_2]

After upgrading two master/slave msl 6060 libraries from 5.07 to 5.16 any mail slot export request will render the mail slot access buttons inoperable under netvault. The library ocp will become unusable and the library will have to be rebooted. Reproducable on another identical library.
Downgraded to 5.07 allowed mail buttons to become operable again after export command in netvault.
Netvault version 7.40 build 37 on linux proliant system.