package tcl8.5 8.5.9-2 failed to install/upgrade: error writing to '<standard output>': Success

Binary package hint: tcl8.5

I was in the process of installing something, and I exited it after realising I did not need this (I know I shouldn't have done this),
(ctrl-c wouldn't work), so I just closed the terminal.
(I was installing via apt-get)
since then, this error has occurred.

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: tcl8.5 8.5.9-2
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic i686
NonfreeKernelModules: wl
Architecture: i386
Date: Sun May 22 02:44:56 2011
ErrorMessage: error writing to '<standard output>': Success
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release i386 (20101007)
SourcePackage: tcl8.5
Title: package tcl8.5 8.5.9-2 failed to install/upgrade: error writing to '<standard output>': Success
UpgradeStatus: Upgraded to natty on 2011-04-14 (37 days ago)