I have made some changes to the cookie settings, it doesn't appear that you have registered yet, so sign up and see if you can log in.
If you are having login problems after you have registered, click on 'delete all cookies' at the bottom of the board and try to log in again.
Hopefully this should fix the issue.
The problems seem to occur if you have a cookie from some other Invision board.....an error was also happening when you try to validate your email addres after registering.
I couldn't see your details under the validating section nor the members, so please click on delete cookie at the link on the bottom of the board and try to register again. Hopefully it should work.