If casper was left installed on the target system by the installer, that's an installer bug.
Can you please run 'apport-collect -p ubiquity 1969464' from the affected system so we can see the installer logs?
If casper was left installed on the target system by the installer, that's an installer bug.
Can you please run 'apport-collect -p ubiquity 1969464' from the affected system so we can see the installer logs?