EA Sports has warned Xbox One players not to connect two controllers to the console while booting up FIFA 14 in order to prevent the game from crashing.
In an update on the game's alert screen, the developer acknowledged that "using 2 controllers to navigate the bootflow may cause a crash. To avoid this, please only use one controller during the FIFA 14 bootflow.
"You can turn on and use additional controllers once in the FIFA Menu. The team will be fixing this issue shortly after launch."
EA's support site states that the issue will be addressed "in a Day 1 Update", however the update does not yet seem to be available.
The publisher also says that it will be rolling out additional fixes in future updates to address a crash in Co-Op Seasons and improve the performance of Kinect voice commands.
FIFA 14 launched on Xbox One last night and is included as a free download with the majority of Day One Edition consoles.
Source: FIFA 14 Xbox One, help.ea.com