Version-Release number of selected component: pitivi-0.99-1.fc27 Additional info: reporter: libreport-2.9.3 cmdline: python3 /usr/bin/pitivi crash_function: _create_next_thumb exception_type: AttributeError executable: /usr/bin/pitivi kernel: 4.14.16-300.fc27.x86_64 runlevel: N 5 type: Python3 uid: 1000 Truncated backtrace: previewers.py:556:_create_next_thumb:AttributeError: 'NoneType' object has no attribute 'seek' Traceback (most recent call last): File "/usr/lib64/python3.6/site-packages/pitivi/timeline/previewers.py", line 556, in _create_next_thumb self.pipeline.seek(1.0, AttributeError: 'NoneType' object has no attribute 'seek' Local variables in innermost frame: time: 26000000000 wish: 26000000000 self: <previewers.VideoPreviewer object at 0x7f5076772ee8 (pitivi+timeline+previewers+VideoPreviewer at 0x561e212ae460)>
Created attachment 1393141 [details] File: backtrace
Created attachment 1393142 [details] File: cgroup
Created attachment 1393143 [details] File: cpuinfo
Created attachment 1393144 [details] File: environ
Created attachment 1393145 [details] File: mountinfo
Created attachment 1393146 [details] File: namespaces
Created attachment 1393147 [details] File: open_fds
Please test with latest updates and reopen if still reproducible.