Seeing any of these error messages? " Yahoo Messenger has encountered a problem and needs to close"
4. When uninstall is complete, restart your computer. 5. Download and install the following software updates to optimize your computer's compatibility with Yahoo Messenger . 6. After installing these updates, restart your computer again, and then run Yahoo Messenger.
Sometimes, we need crash logs to be able to help fix problems with Yahoo Messenger . Learn how to create crash logs in Windows XP.
Messenger crashes when you try to use your webcam Unable to use webcam or see webcam image with Messenger Messenger stops responding
Yahoo Messenger crashing on Windows XP, Vista, or 7.
What to do if Yahoo Messenger crashes
Port: 20 , 23, 25, 80, 119, 5050, 8001, 8002 Webcam Connection Protocol: TCP
https://safety.yahoo.com/topic_full.html?topic=Viruses% 20 and%20Spyware
Ports: 5050, 23, 80, 25, 119, 20