Cannot import downloaded Teambuilder teams to dynasty

Hey I just got into Team Builder to create a team but it said and I quote "An unexpected error occured during this operation" and it did say occured not occurred. So yeah what should I do to fix this glitch or is it not a glitch at all please tell me as quick as possible. (Who made this bro, I want to slap em and say it spelled this way how Unprofessional.)