EndPoint Device Manager - DataBase Error

FATAL SQL ERROR! ::::: SELECT id, mac, ext FROM endpointman_mac_list WHERE id =1 [nativecode=1054 ** Unknown column ‘ext’ in ‘field list’]SQL -

Loaded extension to edit in EP Device Manager and clicked on pencil. Edited Extension by modified Key settings and Saved. Then pressed Save button in Device Manager as I discovered that it will reboot Aastra phone. Then I received error above. Using mySQL I deleted extension (we need a command to remove and clean out an extension from all locations). Still get error when I click on extension in Extensions. Device does not show under Endpoint manager devices. I restored a backup and did not change.

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Please advise, thank you.