package install-info 4.13a.dfsg.1-8ubuntu1 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1

[Rajan Chatterjee]

ubuntu 12.04 64 bit
3.0.0-15-generic
Linux ambleacme 3.0.0-15-generic #26-Ubuntu SMP Fri Jan 20 17:23:00 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

ProblemType: Package
DistroRelease: Ubuntu 12.04
Package: install-info 4.13a.dfsg.1-8ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-15.26-generic 3.0.13
Uname: Linux 3.0.0-15-generic x86_64
ApportVersion: 1.93-0ubuntu2
Architecture: amd64
Date: Fri Feb 24 23:48:08 2012
ErrorMessage: ErrorMessage: subprocess installed post-installation script returned error exit status 1
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
SourcePackage: texinfo
Title: package install-info 4.13a.dfsg.1-8ubuntu1 failed to install/upgrade: ErrorMessage: subprocess installed post-installation script returned error exit status 1
UpgradeStatus: Upgraded to precise on 2012-02-24 (0 days ago)

[Brian Murray (brian-murray)]

There seems to be a configuration error in your /etc/environment file. You'll need to resolve this manually.

Setting up install-info (4.13a.dfsg.1-8ubuntu1) ...^M
/etc/environment: line 2: :/usr/cprojects: No such file or directory^M
dpkg: error processing install-info (--configure):^M
 subprocess installed post-installation script returned error exit status 1^M