[Bug 1241196] [NEW] update to 13.10 crashed on second step

[LEx]

Public bug reported:

Hi, Guys, just tryed to update and its crashed on second step.
 "An unresolvable problem occurred while calculating the upgrade.
 This can be caused by:
 * Upgrading to a pre-release version of Ubuntu
 * Running the current pre-release version of Ubuntu
 * Unofficial software packages not provided by Ubuntu"
And i don't know what to do.
I'm using Ubuntu 13.04. 
Help me, please

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: ubuntu-release-upgrader-core 1:0.192.13
ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
Uname: Linux 3.8.0-31-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: i386
CrashDB: ubuntu
Date: Thu Oct 17 23:21:47 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-10-14 (3 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release i386 (20130424)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to raring on 2013-10-17 (0 days ago)
VarLogDistupgradeTermlog:

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug dist-upgrade i386 raring

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https://bugs.launchpad.net/bugs/1241196

Title:
  update to 13.10 crashed on second step

Status in “ubuntu-release-upgrader” package in Ubuntu:
  New

Bug description:
  Hi, Guys, just tryed to update and its crashed on second step.
   "An unresolvable problem occurred while calculating the upgrade.
   This can be caused by:
   * Upgrading to a pre-release version of Ubuntu
   * Running the current pre-release version of Ubuntu
   * Unofficial software packages not provided by Ubuntu"
  And i don't know what to do.
  I'm using Ubuntu 13.04. 
  Help me, please

  ProblemType: Bug
  DistroRelease: Ubuntu 13.04
  Package: ubuntu-release-upgrader-core 1:0.192.13
  ProcVersionSignature: Ubuntu 3.8.0-31.46-generic 3.8.13.8
  Uname: Linux 3.8.0-31-generic i686
  NonfreeKernelModules: nvidia
  ApportVersion: 2.9.2-0ubuntu8.3
  Architecture: i386
  CrashDB: ubuntu
  Date: Thu Oct 17 23:21:47 2013
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2013-10-14 (3 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release i386 (20130424)
  MarkForUpload: True
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to raring on 2013-10-17 (0 days ago)
  VarLogDistupgradeTermlog:

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