Blender crashes in two cases

[userDepth]

I have found that blender crashes when the segments of a just added UV sphere are changed and when trying to set an environment map in the material panel.

These bugs can be reproduced by adding an UV sphere and change the segments in the left and opening blender en go to the materials of the starting cube and trying to set an environment map in textures and go to the environment map section of the textures panel and clicking on "image" tab of it.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: blender 2.70a-2ubuntu3
ProcVersionSignature: Ubuntu 3.16.0-34.47-generic 3.16.7-ckt8
Uname: Linux 3.16.0-34-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.4
Architecture: amd64
CurrentDesktop: GNOME
Date: Fri Apr 17 15:34:29 2015
InstallationDate: Installed on 2015-04-12 (4 days ago)
InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
SourcePackage: blender
UpgradeStatus: No upgrade log present (probably fresh install)