Comment 3 for bug 1159800

This fix posted by EricW in bug #1160533 fixed the problem for me:

"This is a small packaging problem. To get rid of the error you can safely remove libreoffice-emailmerge with dpkg (it is a transitional package, which means that it contains nothing, as it is now integrated in libreoffice-common package).

After this, reinstall libreoffice-common with synaptic or apt-get, everything should run fine."