Bug ID: 370933
           Summary: Upgrade from 16.4 to 16.10 silently fails
           Product: Discover
           Version: 5.6.2
          Platform: Kubuntu Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: discover

After clicking the upgrade button and entering my password, nothing happens.

When I run the same command (do-release-upgrade -m desktop -f
DistUpgradeViewKDE) from Konsole, I get the following Python error:

Checking for a new Ubuntu release
Traceback (most recent call last):
  File "/usr/bin/do-release-upgrade", line 157, in <module>
    fetcher = get_fetcher(options.frontend, m.new_dist, options.data_dir)
  File "/usr/bin/do-release-upgrade", line 44, in get_fetcher
    label=_("Downloading the release upgrade tool"))
  File "/usr/lib/python3/dist-packages/DistUpgrade/",
line 200, in __init__
    uic.loadUi(uiFile, self.dialog)
  File "/usr/lib/python3/dist-packages/PyQt5/uic/", line 222, in
    return DynamicUILoader(package).loadUi(uifile, baseinstance,
  File "/usr/lib/python3/dist-packages/PyQt5/uic/Loader/", line 72, in
    return self.parse(filename, resource_suffix, basedir)
  File "/usr/lib/python3/dist-packages/PyQt5/uic/", line 972, in
    document = parse(filename)
  File "/usr/lib/python3.5/xml/etree/", line 1184, in parse
    tree.parse(source, parser)
  File "/usr/lib/python3.5/xml/etree/", line 585, in parse
    source = open(source, "rb")
FileNotFoundError: [Errno 2] No such file or directory:

Reproducible: Always

Steps to Reproduce:
1. Attempt to upgrade from 16.04 to 16.10 in Discover

Actual Results:  
Nothing happens. I can keep clicking Upgrade and entering my password, nothing

Expected Results:  
Successful upgrade or useful error message.

This is a pretty clean and barely used install of Kubuntu 16.04 on a laptop,
although I don't expect that other packages should affect this behavior. I do
have Steam installed, in case that has sucked in something that may be causing

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