package install-info 4.13a.dfsg.1-6ubuntu3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2

[Dane Mutters]

I used this command in preparation for building the Freespace 2 Open alternate Linux launcher:

sudo aptitude install build-essential automake1.9 autoconf libreadline5-dev subversion

Thanks for your time!

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: install-info 4.13a.dfsg.1-6ubuntu3
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7
Uname: Linux 2.6.38-10-generic x86_64
NonfreeKernelModules: vhba nvidia
Architecture: amd64
Date: Fri Jul 15 04:26:55 2011
ErrorMessage: subprocess installed post-installation script returned error exit status 2
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Beta amd64 (20110413)
SourcePackage: texinfo
Title: package install-info 4.13a.dfsg.1-6ubuntu3 failed to install/upgrade: subprocess installed post-installation script returned error exit status 2
UpgradeStatus: No upgrade log present (probably fresh install)

[Brian Murray (brian-murray)]

You seem to have a syntax error in your /etc/environment file. You'll need to manually resolve this issue.

rocessing triggers for install-info ...
/etc/environment: line 1: unexpected EOF while looking for matching `"'
dpkg: error processing install-info (--unpack):
 subprocess installed post-installation script returned error exit status 2