I think this may be the same bug I found:
sudo dpkg -P matchbox-window-manager
(Reading database ... 399785 files and directories currently installed.)
Removing matchbox-window-manager ...
dpkg (subprocess): unable to execute pre-removal script: Exec format error
dpkg: error processing matchbox-window-manager (--purge):
subprocess pre-removal script returned error exit status 2
Errors were encountered while processing:
matchbox-window-manager
I edited /var/lib/dpkg/info/matchbox-window-manager.prerm and added the
needed "#!/bin/sh" as the top line.
apt-cache policy matchbox-window-manager
matchbox-window-manager:
Installed: (none)
Candidate: 1.2-2ubuntu2
Version table:
1.2-2ubuntu2 0
500 http://us.archive.ubuntu.com intrepid/universe Packages
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package matchbox-window-manager 1.2-2ubuntu2 failed to install/upgrade: le
sous-processus pre-removal script a retourn? une erreur de sortie d'?tat 2
https://bugs.launchpad.net/bugs/272450
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