I tried to install Ubuntu 15.04 aside Windows 10. The installation failed.

[cedrik]

I made a partition with 130 GB of free space for ubuntu the rest was left for Windows 10 which was already installed. Ubuntu installation said it will install beside Windows I choose that option and It started installing, until the error appears, then it suggested to report.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ubiquity 2.21.25 [modified: lib/partman/automatically_partition/question]
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic i686
ApportVersion: 2.17.2-0ubuntu1
Architecture: i386
CasperVersion: 1.360
Date: Sun Aug 2 20:56:57 2015
InstallCmdLine: BOOT_IMAGE=(loop)/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper iso-scan/filename=/Ubuntu/ubuntu-15.04-desktop-i386.iso quiet splash --
LiveMediaBuild: Ubuntu 15.04 "Vivid Vervet" - Release i386 (20150422)
ProcEnviron:
 LANGUAGE=et_EE.UTF-8
 PATH=(custom, no user)
 LANG=et_EE.UTF-8
 SHELL=/bin/bash
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)