I cannot configure the email settings in sugar CE 6.0.1 for outgoing mails. When I enter the smtp settings for "other" provider the testmail is send and received correctly. When clicking the save button I get the following message:

Query Failed:UPDATE outbound_email SET id = 'a8b71ac6-6c18-4d5d-14f5-4bf5533cda77', name = 'system', type = 'system', user_id = '1', mail_sendtype = 'SMTP', mail_smtptype = 'other', mail_smtpserver = 'smtp.1und1.de', mail_smtpport = '25', mail_smtpuser = 'xy@xyz.de', mail_smtppass = 'cyVfoaLNmyY=', mail_smtpauth_req = 1, mail_smtpssl = 1 WHERE id = 'a8b71ac6-6c18-4d5d-14f5-4bf5533cda77'::MySQL error 1054: Unknown column 'mail_smtptype' in 'field list'
How can I overcome this problem?