Selecting previously deselected package mscompress.
Unpacking mscompress (from .../mscompress_0.3-2ubuntu1_i386.deb) ...
Errors were encountered while processing:
 /var/cache/apt/archives/beryl-plugins_0.2.1-0ubuntu2_i386.deb
 /var/cache/apt/archives/libemeraldengine0_0.2.1-0ubuntu1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)