Created attachment 1157462 [details]
File: backtrace

Created attachment 1157463 [details]
File: environ

Fixed by this commit: https://github.com/timlau/yumex-dnf/commit/d86a89f02bcc74f56ac1f6fe93bb4a1d260d2d4c

Similar problem has been detected:

Steps to reproduce:
1. open yumex-dnf
2. select any package for installation, e.g. python3-pylint-gui
3. press "run" button
4. confirm transaction
5. enter your password and confirm

What happens:
Crash on backend, error dialog shows up, transaction is aborted.

What should happen:
No crash. Transaction should be run.

Additional info:
Error message from yumex-dnf error dialog:

20:10:46: EXCEPTION : g-io-error-quark: GDBus.Error:org.freedesktop.DBus.Python.AttributeError: Traceback (most recent call last):
  File "/usr/lib64/python3.5/site-packages/dbus/service.py", line 707, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/lib/python3.5/site-packages/dnfdaemon/server/__init__.py", line 83, in newFunc
    rc = func(*args, **kwargs)
  File "/usr/share/dnfdaemon/dnfdaemon-system", line 537, in RunTransaction
    result = self.run_transaction()
  File "/usr/lib/python3.5/site-packages/dnfdaemon/server/__init__.py", line 550, in run_transaction
    self._check_gpg_signatures(to_dnl)
  File "/usr/lib/python3.5/site-packages/dnfdaemon/server/__init__.py", line 699, in _check_gpg_signatures
    result, errmsg = self.base.sigCheckPkg(po)
  File "/usr/lib/python3.5/site-packages/dnf/util.py", line 79, in __getattr__
    % (C.__name__, name))
AttributeError: 'Base' object has no attribute 'sigCheckPkg'
 (36)

reporter:       libreport-2.7.0
cmdline:        /usr/bin/python3 /usr/bin/yumex-dnf
event_log:      2016-05-23-20:09:22> (»report_uReport« erfolgreich abgeschlossen)
executable:     /usr/bin/yumex-dnf
kernel:         4.5.4-300.fc24.x86_64
package:        yumex-dnf-4.3.3-1.fc24
pkg_fingerprint: 3D03 BDC6 DD82 F6A5
pkg_vendor:     Fedora Project COPR (timlau/yumex-dnf)
reason:         __init__.py:1100:on_history_undo:AttributeError: 'Window' object has no attribute 'process_actions'
reproducible:   Not sure how to reproduce the problem
runlevel:       N 5
type:           Python3

Please ignore my previous comment (comment #4), it is unrelated. Both issues have the same backtrace in yumex-dnf but different causes. Have a look at bug #1338564 for that.

The original bug was reported through abrt, and occurred when I tried to undo a package install through Yumex-dnf. However, I also receive the same (or at least a very similar) error when trying to install any package through Yumex. I can list, search, and even remove packages, but any attempt to install new packages fails with a (python?) error.

I can confirm that today's update to 4.3.3-1 fixed the package install issue. I'm now able to install new packages through Yumex as expected. However, I'm still unable to undo changes from the history list.

Sorry, my mistake. The update was to the dnfdaemon, not yumex (I just saw something with dnf in the name and wanted to test). However, whether or not it's related, I can install packages using yumex again.

*** Bug 1356674 has been marked as a duplicate of this bug. ***

This package has changed ownership in the Fedora Package Database.  Reassigning to the new owner of this component.

This package has changed ownership in the Fedora Package Database.  Reassigning to the new owner of this component.

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