Unable to mount disk encrypted with installer FDE

[Ian Nicholson]

I have a HDD that was encrypted with the standard full disk encryption setup in the Ubuntu installer. I now have a new installation on a second HDD and I would like to access my data from the first HDD.
When I input the correct password, I get an error message stating "operation was cancelled".

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: cryptsetup 2:1.6.1-1ubuntu4
ProcVersionSignature: Ubuntu 3.18.0-8.9-generic 3.18.1
Uname: Linux 3.18.0-8-generic x86_64
ApportVersion: 2.15.1-0ubuntu4
Architecture: amd64
Date: Wed Feb 4 14:21:26 2015
InstallationDate: Installed on 2014-12-11 (55 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20141210)
ProcEnviron:
 LANGUAGE=en_US
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: cryptsetup
UpgradeStatus: No upgrade log present (probably fresh install)
crypttab: sda3_crypt UUID=1f72ea1b-4733-49b5-915d-0434b7d99f22 none luks,discard

[Edward Moffett (edwardmoffett)]

Hi,
Having come here through google, I have the same problem. Is there any information which I can constructively contribute beyond the below?

Distributor ID: Ubuntu
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Codename: trusty

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.