CreateMeeting fails with ServerError

[denisnasyrov]

Hello.

I have some strange error with creating Webex meeting by XML API  with notification users.

I've added 

<attendeeOptions>
<emailInvitations>true</emailInvitations>
</attendeeOptions>

and 

<emailInvitations>true</emailInvitations> 

​to every attendee. 

But server returns Server error. If I change attendee emailInvitations to false server returns Success result. 

Also I've tried with CreateMeetingAttendee with emailInvitations=false server returns Success, if I change to true server returns 404 error.

Api version: 5.7

[denisnasyrov]

Error response:

<serv:message xmlns:serv="http://www.webex.com/schemas/2002/06/service" xmlns:com="http://www.webex.com/schemas/2002/06/common" xmlns:meet="http://www.webex.com/schemas/2002/06/service/meeting" xmlns:att="http://www.webex.com/schemas/2002/06/service/attendee"><serv:header><serv:response><serv:result>FAILURE</serv:result><serv:reason>Server Error</serv:reason><serv:gsbStatus>PRIMARY</serv:gsbStatus><serv:exceptionID>000000</serv:exceptionID></serv:response></serv:header><serv:body><serv:bodyContent/></serv:body></serv:message>

Problem is very serious because it is not possible to send invitations to attendees.