Video & Audi Chat failed to AOL Messenger 6.1

Hello everyone,
(sorry for my bad english)

I use ichat AV 4.0 (Leopad of course) and my girlfriend AOL Messenger 6.1 on Vista (32bit).
The connection failed if we start a video or audio chat. The dialog box or messenger shows a message like; "the user xyz hang up".

Date/Time: 2007-12-14 22:07:52.363 +0100
OS Version: 10.5.1 (Build 9B18)
Report Version: 4

iChat Connection Log:
2007-12-14 22:07:31 +0100: AVChat started with ID 4216360083.
2007-12-14 22:07:31 +0100: pooly77@mac.com: State change from AVChatNoState to AVChatStateWaiting.
2007-12-14 22:07:31 +0100: 0xff71c10: State change from AVChatNoState to AVChatStateInvited.
2007-12-14 22:07:33 +0100: 0xff71c10: State change from AVChatStateInvited to AVChatStateConnecting.
2007-12-14 22:07:33 +0100: pooly77@mac.com: State change from AVChatStateWaiting to AVChatStateConnecting.
2007-12-14 22:07:44 +0100: 0xff71c10: State change from AVChatStateConnecting to AVChatStateEnded.
2007-12-14 22:07:44 +0100: 0xff71c10: Error -8 (Did not receive a response from 0xff71c10.)
2007-12-14 22:07:44 +0100: pooly77@mac.com: State change from AVChatStateConnecting to AVChatStateEnded.
2007-12-14 22:07:44 +0100: pooly77@mac.com: Error -8 (Did not receive a response from 0xff71c10.)

Video Conference Error Report:


Video Conference Support Report:


Video Conference User Report:
0.000000 @:0 type=5 (00000000/16402)
[Local SIP port]
[]
0.000016 @:0 type=5 (00000000/16402)
[Local SIP port]
[]
0.469618 @Video Conference/VideoConferenceMultiController.m:1476 type=5 (00000000/0)
[IP And Port Data With Caller IP And Port Data: Obtained 160 bytes of local IP and port data (4 entries). Remote data was 0 bytes (0 entries).
]
[]
27.090350 @Video Conference/VideoConferenceMultiController.m:1476 type=5 (00000000/0)
[IP And Port Data With Caller IP And Port Data: Obtained 160 bytes of local IP and port data (4 entries). Remote data was 0 bytes (0 entries).
]
[]
162.213469 @Video Conference/VideoConferenceMultiController.m:1476 type=5 (00000000/0)
[IP And Port Data With Caller IP And Port Data: Obtained 160 bytes of local IP and port data (4 entries). Remote data was 0 bytes (0 entries).
]
[]
1324.877347 @Video Conference/VideoConferenceMultiController.m:1476 type=5 (00000000/0)
[IP And Port Data With Caller IP And Port Data: Obtained 160 bytes of local IP and port data (4 entries). Remote data was 0 bytes (0 entries).
]
[]
1327.561155 @Video Conference/VideoConferenceMultiController.m:1476 type=5 (00000000/0)
[IP And Port Data With Caller IP And Port Data: Obtained 160 bytes of local IP and port data (4 entries). Remote data was 80 bytes (2 entries).