MumbleKit crashes when accessing groups

[mkrautz]

(Via http://forums.mumble.info/viewtopic.php?f=15&t=1640)

Hi,
I defined a group to a sub-channel and suitable permissions. (see attachments)
From MumbleKit, after being connected to the server, I ask for MKAccessControl by calling
[code][self.serverModel requestAccessControlForChannel:c];[/code]

When receiving response, app crashes in this point (see (*) )

- (NSUInteger)countByEnumeratingWithState:(NSFastEnumerationState *)state objects:(id *)stackbuf count:(NSUInteger)len
{
    // TODO: We only support enumeration of object values.  In the future, we
    // can extend this code to return a new list of NSNumber* objects wrapping
    // our primitive values.
    PBArrayValueTypeAssert(PBArrayValueTypeObject);  <----- (*)

    if (state->state >= _count)
    {
        return 0; // terminate iteration
    }

How should I set groups and permission on murmur to avoid this crash?

If I comment the assert, the following crash is when accessing the PBArray named add in here:

    for (NSNumber *value in chanGroup.add) {
        [channelGroup.members addObject:value];
    }