Please attach /var/lib/dpkg/info/libapr1.list (or libapr1:amd64.list not sure). Then remove that file and try reinstalling libapr1. It should solve your problem.
The file got corrupted but your report doesn't help us find out how. It might be an hardware problem or a filesystem corruption. dpkg: unrecoverable fatal error, aborting: files list file for package `libapr1' contains empty filename ** Changed in: dpkg (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/890869 Title: package libc6 2.12.1-0ubuntu10.2 failed to install/upgrade: package libc6 is already installed and configured To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/890869/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs