Man, this happened to me...
I added adboards in the stadium and unknowingly they had a higher proportion than the adboards they had before,
and I had forgotten to back up the stadium.
I was editing new adboards, I did it again and the error occurred again,
so I think it's the proportion of these new adboards that corrupted their stadiums that had these adboards installed before, I had to install the stadium again, I was lucky not to be a stadium that It already existed in my game,
it was a new stadium that I was adding; when this error occurred,
he did the same thing to me; but as it does to recover the corrupted stages,
or if it is possible to reverse the error caused by the new panels,
I can not explain if it is possible to change the adboards using only Creation Master,
because I tried, and it does not work with me, this error continued.
Therefore, I recommend that you add these stadiums again, it is a shame if you do not have a backup of them,
if you have backup of the stadiums in their previous versions, before the problem occurred,
your work will be smaller, I will post links to the FIFA stadiums. 14
If you don't have them with you yet...
https://mega.nz/#F!FxJ20IJT!f8gqGi3NvKD_k1eRlZ6EAA
https://mega.nz/#F!8ZtEhYJC!vq1KqLFKSzLfOGJ6ppwSyw
https://www.mediafire.com/folder/maqn8kgy17ci9/Stadiums_for_FIFA_14