How to fix error 999?

When i try to play canasta on yahoo it keeps giving me a error 999 why is this happening & how do I fix it?

• i want to play canasta but code keeps appearing it reads error 999. and it annoying me.

• Answer:

  fix your problem by doing the following yahoo now uses popups to enter rooms,DO NOT turn off popup blocker,no need.if you do you get flooded with popups. click on popup blocker click on always allow.add yahoo.com to list. then the 1st thing you do when you enter lounge is check play small window in option box. if you don't and enter room you get grey screen,if you just close it you are now in a room and if you try going elsewere you will get "error logging in " in every lounge..if this happens click on lounge tab and check small window box then click refresh if that doesn't work, reboot and follow above info.once in small room you can expand it,,you only see top half of cards but you can play.and see chat area so you can talk to other players.this also eliminates the ads at top of room.yahoo is now running sales ads in rooms and lounges. email them and let them know what you don't like about new format i did, if everyone does this maybe they will stop it. the site to complain is on lounge select page the HELP button at top,feedback!