Ubuntu 14.04 broke sudo -l option help needed!

Hi,

Today I shrink my Ubuntu main disk form 20GB to 10GB. No problem encounter, ubuntu is working. But now I wanted to install a program with sudo rights. Normaly I do sudo (commando) but this time I needed to do alot of commando's. So i thought let use sudo -l. But here came the problem

If I use sudo then a commando no problem
If I use sudo -l ill get this:

Erwin@ubuntu:~$ sudo -l
Matching Defaults entries for erwin on ubuntu:
env_reset, mail_badpass,
secure_path=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin

User erwin may run the following commands on ubuntu:
(ALL : ALL) ALL

Dont know how to fix this.

I have tryd to reinstall Sudo without any succes.