Tried to set VestaCP but got an ERROR!

[hwilliams]

Just now bought a new server tried to set VestaCP but got an error. What am i doing wrong?

OS: Ubuntu 12.04.5 LTS
uname -a: Linux localhost 3.11.0-15-generic #25~precise1-Ubuntu SMP Thu Jan 30 17:39:31 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

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Installation will take about 15 minutes ...

Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages have been kept back:
  landscape-common linux-headers-generic-lts-saucy linux-image-generic-lts-saucy
0 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
1 not fully installed or removed.
After this operation, 0 B of additional disk space will be used.
Setting up grub-pc (1.99-21ubuntu3.18) ...
dpkg: error processing grub-pc (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 grub-pc
E: Sub-process /usr/bin/dpkg returned an error code (1)
Error: apt-get upgrade failed

How to fix it?

[imperio]

Hi,
Show me result of this commands

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sudo apt-get update
sudo apt-get upgrade