sudoers.so is null, cant do anything.

[kikinaak]

I have downloaded retropie 3.8.1 SD image, flashed it to a 32 gig sandisk card, and popped it in a pi 3.
It boots up, goes through controller config, and launches emulationstation.
However, most of the configuration menu options drops briefly to a shell where I get:

[code]
sudo: error in /etc/sudo.conf, line 0 while loading plugin 'sudoers_policy'
sudo: unable to load /usr/lib/sudo/sudoers.so: (null)
sudo: fatal error, unable to load plugins
ALSA lib conf.c:1697:(snd_config_load1) toplevel:1:9316:Unexpected end of file
ALSA lib conf.c:3778:(snd_config_update_r) /usr/share/alsa/alsa.conf may be old or corrupted: consider to remove or fix it
lvl0: VolumeControl::init() - Failed to attach to the default card!
ALSA lib conf.c:1697:(snd_config_load1) toplevel:1:9316:Unexpected end of file
ALSA lib conf.c:3778:(snd_config_update_r) /usr/share/alsa/alsa.conf may be old or corrupted: consider to remove or fix it
lvl0: AudioManager Error - Unable to open SDL audio: ALSA: Couldn't open audio device: Invalid argument
[/code]

Attempting to sudo anything results in the same error. I assume the alsa errors are because it hasnt been configured yet.
/usr/lib/sudo/sudoers.so is present, but is a zero length file.

Any idea how to get this resolved without being able to use sudo? I cannot even cleanly reboot without being root! Also, perhaps related perhaps not, Each boot retropie thinks is the first boot. I assume because conf files have not been written.

[BuZz]

@kikinaak image was written badly, or sd card is corrupt or faulty

[kikinaak]

That cleared it. Thanks much, I was scratching my head since I assumed "image write ok" meant I could rely on it. Guess not.