Error 90100 Please help

When i do this:
1. start WRHS
2. start warrock don't go into server yet.
3. hide warrock.exe
4. close WRHS since it should say 'headshot enabled'
5. close rootkit.
6. if everyting is closed, play warrock.
7. happy hacking!

and i login i see the servers. OK. But when i choose server i get error:
Invalid packet 90100 or Account update has failed 90100.
Maybe someone can help?

uh, if it says one of those then u should re-install warrock.
and try again. try re-installing and seeing if it works about 5 times and if it still doesn't work then u might not have sufficient O/S privillages or something.