subprocess installed post-installation script returned error

indicator-virtualbox currently only for ubuntu (lucid, maverick, natty)

I am getting the same error, Ubuntu, Lucid 64 bit.

But the indicator still launches despite the error on install.
---
sudo apt-get install indicator-virtualbox
...
Unpacking indicator-virtualbox (from .../indicator-virtualbox_1.1.1~astrapi~lucid1_amd64.deb) ...
Processing triggers for desktop-file-utils ...
Processing triggers for python-gmenu ...
Rebuilding /usr/share/applications/desktop.en_US.utf8.cache...
Processing triggers for python-support ...
Setting up indicator-virtualbox (1.1.1~astrapi~lucid1) ...
gtk-update-icon-cache: No theme index file.
gtk-update-icon-cache: No theme index file.
dpkg: error processing indicator-virtualbox (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 indicator-virtualbox
E: Sub-process /usr/bin/dpkg returned an error code (1)

[...]
Setting up indicator-virtualbox (1.1.1~astrapi~maverick1) ...
gtk-update-icon-cache: No theme index file.
gtk-update-icon-cache: No theme index file.
dpkg: error processing indicator-virtualbox (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 indicator-virtualbox
E: Sub-process /usr/bin/dpkg returned an error code (1)

Ubuntu maverick

Thank you for taking the time to report this bug and trying to help make Ubuntu better. However, it seems that you are not using a software package provided by the official Ubuntu repositories. Because of this the Ubuntu project can not support or fix your particular bug. Please report this bug to the provider of the software package. Thanks!
If you are interested in learning more about software repositories and Ubuntu the following pages should be informative:
1. http://www.ubuntu.com/community/ubuntustory/components - information about Ubuntu repositories
2. https://help.ubuntu.com/community/Repositories - information regarding managing repositories.

Got it too.

[...]

Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
Processing triggers for menu ...
Errors were encountered while processing:
 indicator-virtualbox
E: Sub-process /usr/bin/dpkg returned an error code (1)
A package failed to install. Trying to recover:
Setting up indicator-virtualbox (1.1.1~astrapi~natty1) ...
gtk-update-icon-cache: No theme index file.
gtk-update-icon-cache: No theme index file.
dpkg: error processing indicator-virtualbox (--configure):
 subprocess installed post-installation script returned error exit status 1
Errors were encountered while processing:
 indicator-virtualbox

Using linux Mint Katya x64.