Messages video chat won't connect
Dear Apple Community,
I have been using Messages/iChat for the past 2 years already, and have not experienced any technical difficulties. However, I am now experiencing difficulty when trying to video chat with someone. When I initiate a video chat, the person on the other line says they have accepted/declined when I ask, but I do not recieve the message if they decline or when they accept (it does not connect and keeps loading). I have tried restarting my MacBook Pro multiple times, yet with no avail. My last step was trying to reinstall OS X Mountain Lion, yet this did not fix the problem either. I am not experiencing any difficulty while using the chat portion of Messages, but only seem to have problems with the video chat aspect.
Thank you,
-C
MacBook Pro, OS X Mountain Lion (10.8.4)