It happened to me several times as well, it said error but then I entered queenzone.com again, checked my profile and it was updated. I thought that was weird... Anyway try it like that, and if it still doesn't work, ask YourValentine - if she has the time she'll help.
People often have problems when they try to update their profile but they don't select any option on "Allow other Queenzone.com members to see your email address". Make sure you choose either Yes or No. That should do the trick.
