[Bug 1637495] [NEW] Lubuntu installation failed

Public bug reported: I already have Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and kali linux in different partition .In another logical partition I tried to install Lubuntu 16.10 using bootable USB pendrive, but the installer is failed. I tried several times , but problem not solved. ProblemType: Bug

[Bug 1534128] [NEW] upgrading from 14.04 to 15.04 is failed why?

Public bug reported: i try to upgrade to ubuntu 15.04 from 14.04 LTS.when upgrading shows error ""Can't install 'ubuntu-desktop' It was impossible to install a required package. Please report this as a bug using 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal."" ProblemType: Bug