I just wanted to let everyone know that I did as Lyra suggested and it worked. I can get into chat no problem.
Mith, I tried doing your shortcut and it wouldn't let me. It kept saying error.
What I DID do to cut corners was unzip the file as Lyra said, and uninstalled my current Flash. But, I didn't have to restart, I just clicked on the 11_5_r502_149 Application (mine was the second file from the top) and it downloaded it. I still haven't restarted and chat is running fine (:
Hope this kind of helps others! (:
-MissKatt
EDIT: I forgot to mention that I run FireFox (: