305168 Script problem. need fixing.

My site at [login to view URL] is having problem. When the users are adding point it automatically redirect you to myspace. I have a few programmers look at this but it seem like they can't fix it. They say "they think" the problem is because myspace changed something and the adders site didn;t update that. You can see whats wrong by going to the site and login with u sername: test password: test123 Try to add points and you will notice that it direct you to myspace. Well it is not suppose to do that. It is suppose to finish adding point until the end. I need someone to look at this and thoroughly fix it. I think this will be easy if you know where the problem is coming from then you can get this finish in a few minute. I need a really good person with really good php knowledge to exactly determine what the problem is and fix it. Because the other programmer keep saying "i think" they're not sure what the problem is. I am paying a lot for this job which can be easily done in less than a day as long you have very good knowledge and can fix the problem. *I will only be paying if you can fix it.