POTENTIAL FIX FOR LINEUP ISSUE THAT WORKED FOR ME!

Okay the issue is that one of your cards are bugged for me it was my FS Minkah. What you need to do is put all your cards in your lineup either in a set or on the auction house (obviously put them up for a super high price) to get the bugged card out of your lineup. Then you should be able to open your lineup.

Worked for me. Had to shuffle my corners around and finally got in. Creating a new lineup immediately! 

Yeah its the DB. I remembered I downgraded my Tarheeb Still Ultimate captain and now the error message appears when I try to do anything with him. 

I'm having the same issue it's only the DB's that crash it. I even tried using the companion app to set the lineup which worked for the main lineup but it won't let me edit any of the specialist positions now since you can't change those in the app... gotta love trash EA lol...they love taking people's money and not giving a **bleep** about the experience you have lol...classic EA

This in fact did not resolve the issue, I still have the same problem, and I tried uninstalling and reinstalling the game, still nothing

i logged in this morning and checked my lineup before i knew this was even a thing, everything was fine, i bought a strategy from the auction block and went back to my lineup to insert it, got hit with the error 😂 it’s 100% an ea server side issue that i’d assume they have to put out a hotpatch for, most likely with this next content drop, but the fact this is an issue in the first place is a **bleep** joke 😂 i haven’t tried doing what you did yet but i’ll lyk if it works for me

It appears when I try to change my corners or safety's it kicks me out again. This is def an EA sided thing.