I just encountered this problem. When I first wanted to see Yang Yang, I couldn't. Later, I found that there was no flash, so I downloaded it, but I still couldn't watch it. I uninstalled yy, and I uninstalled it before, but every time I uninstalled and installed it, I had my account password, so this time I deleted all the files about yy on disk C and then reinstalled it. There is no account record for this login, so I can watch channel 7455 by re-entering and logging in.