I recently (3 days ago) edited my profile. Try the following:
1) open your profile
2) enter ONE character in each field and save your profile. If you can't save it try to add ONE character in to the first field.
3) change one field at a time and save the change. Do this over until you have all fields filled with the right information
This i what i did to edit the profile. I tried to do it all at once and always got an error saying that there is a problem with one or more field (no hint which one).
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Eventually I found a workaround of this problem in another thread of this forum. The magic is to go to your profile and change your public display name (you can update it back to the previous one after that), then you will be able to update your profile details without getting this annoying error .