Ubuntu thinks another package manger is open.
I have repeatedly tried installing frostwire and/or limewire .deb files. They hang and after closing and restarting and attempting to retry. I get the error "Only one software management tool is allowed to run at a time" Of course trying to install the package file was the first thing I did after restarting. So I am sure there is not another open. When i try top open synaptic package manager. I get the error "E: dpkg was interrupted, you must manually run 'dpkg --configure -a' to correct the problem.
E: _cache->open() failed, please report."