ISight Camra issues with iChat

Question

I see the same error when I try connecting in ichat with my dad. I'm able to connect with other sites without problems, but cannot connect with him. the console shows this error:
1/1/08 6:33:27 PM iChat[6364] .sdef error: Operation could not be completed. (NSXMLParserErrorDomain error 1549.)
1/1/08 6:33:27 PM iChat[6364] line number: 2
1/1/08 6:33:27 PM iChat[6364] .sdef error: Operation could not be completed. (NSXMLParserErrorDomain error 1549.)
1/1/08 6:33:27 PM iChat[6364] line number: 2
1/1/08 7:12:43 PM iChat[6364] No iChat delegate set for vcc:initiateConferenceCompletedForParty:
1/1/08 7:29:24 PM iChat[6900] NSOpenGLAutoscaleBounds=NO
1/1/08 7:29:24 PM iChat[6900] .sdef error: Operation could not be completed. (NSXMLParserErrorDomain error 1549.)
1/1/08 7:29:24 PM iChat[6900] line number: 2
1/1/08 7:29:24 PM iChat[6900] .sdef error: Operation could not be completed. (NSXMLParserErrorDomain error 1549.)
1/1/08 7:29:24 PM iChat[6900] line number: 2
On a successful connection, however the messages are very different:
1/1/08 5:13:12 PM iChat[6364] Detected bandwidth (kbits/s): 404 up, 404 down. (00000000)
1/1/08 5:15:51 PM iChat[6364] Detected bandwidth (kbits/s): 412 up, 412 down. (00000000)
1/1/08 5:47:15 PM iChat[6364] Detected bandwidth (kbits/s): 434 up, 434 down. (00000000)

Answer 1

Hello nagendramishr
I am uncertain whether this is merely an information post or whether you are asking for iSight help.
If you think you have an iSight problem, use the suggestions in How to test your iSight to ensure it is functional to determine whether the problem is related to your external iSight and to fix common user-correctable problems.
Whether you are using external or built-in iSight, be sure to consider all relevant suggestions from Apple's iSight troubleshooting page.
If your iSight works correctly with any app or in any user account, iSight is NOT your problem. In that case you will need to determine whether the problem is with your applications software or your OS.
Unless the problem you post about here is the same one that you are already working with Ralph in your iChat AV 3 post at
  http://discussions.apple.com/message.jspa?messageID=6232695#6232695 ,
if your only problem is another issue with iChat AV, I suggest you search or post in iChat AV 3 Discussions.
If using the above links does not give you the answers you need to your iSight question, when you post your specific question(s), please also include specifics on the following:
(a) which iSight you are using,
(b) what you found by your iSight troubleshooting,
(c) which software works with your iSight and
(d) which does not,
(e) are ALL the problems EXACTLY the same in every user account you try,
(f) how the problem differs on your different Macs, and
(g) how the problem your post about here differs from the issue you are posting about in iChat AV 3 Discussions. 
We will try to provide more focused suggestions based on the details in your response.
EZ Jim
PowerBook 1.67 GHz w/Mac OS X (10.4.11) G5 DP 1.8 w/Mac OS X (10.5.1)  External iSight
Message was edited by: EZ Jim