Version-Release number of selected component:
yumex-3.0.16-1.fc21

Additional info:
reporter:       libreport-2.3.0
cmdline:        /usr/bin/python -E /usr/share/yumex/yum_childtask.py 2 True False /etc/yum.conf
dso_list:       yum-3.4.3-153.fc21.noarch
executable:     /usr/share/yumex/yum_childtask.py
kernel:         3.19.3-200.fc21.x86_64
runlevel:       N 5
type:           Python
uid:            0

Truncated backtrace:
rpmtrans.py:280:_getTxmbr:AssertionError

Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/yum/rpmtrans.py", line 454, in callback
    return self._instOpenFile( bytes, total, h )
  File "/usr/lib/python2.7/site-packages/yum/rpmtrans.py", line 500, in _instOpenFile
    name, txmbr = self._getTxmbr(h)
  File "/usr/lib/python2.7/site-packages/yum/rpmtrans.py", line 280, in _getTxmbr
    assert len(txmbrs) == 1
AssertionError

Local variables in innermost frame:
self: <yum.rpmtrans.RPMTransaction instance at 0x7fd5cdeba128>
pkgtup: ('bluez-libs', 'x86_64', '0', '5.29', '2.fc21')
erase: False
cbkey: (<rpm.hdr object at 0x7fd5cc85d7d0>, '/var/cache/yum/x86_64/21/updates-testing/packages/bluez-libs-5.29-2.fc21.x86_64.rpm')
txmbrs: [<TransactionMember : bluez-libs.x86_64 0:5.29-2.fc21 - e (0x7fd5cdf597a0)>, <TransactionMember : bluez-libs.x86_64 0:5.29-2.fc21 - u (0x7fd5ce6e30e0)>]

Potential duplicate: bug 877638