# Numerous errors on startup with today's nightly on mac

**URL:** <https://discourse.slicer.org/t/numerous-errors-on-startup-with-todays-nightly-on-mac/13873>\
**Category:** Support\
**Tags:** dicombrowser\
**Created:** [October 5, 2020, 9:54pm UTC](https://discourse.slicer.org/t/numerous-errors-on-startup-with-todays-nightly-on-mac/13873 "2020-10-05T21:54:32Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![fedorov](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/fedorov/32/14_2.png) [@fedorov](https://discourse.slicer.org/u/fedorov)\
**Post date:** [October 5, 2020, 9:54pm UTC](https://discourse.slicer.org/t/numerous-errors-on-startup-with-todays-nightly-on-mac/13873/1 "2020-10-05T21:54:32Z")

</div>

Is the preview release expected to be non-functional today?

There is a long list of errors on startup, the initial part is below:

```auto
>>> 
Traceback (most recent call last):
  File "<string>", line 1, in <module>
NameError: name 'getSlicerRCFileName' is not defined
Traceback (most recent call last):
  File "/Applications/Slicer.app/Contents/bin/Python/vtkmodules/ __init__.py", line 13, in <module>
    from . import vtkCommonCore
ImportError: dlopen(/Applications/Slicer.app/Contents/bin/Python/vtkmodules/vtkCommonCore.cpython-36m-darwin.so, 1): Library not loaded: /Volumes/D/P/S-0-build/VTK-build/lib/libvtkWrappingPythonCore-9.0.1.dylib
  Referenced from: /Applications/Slicer.app/Contents/bin/Python/vtkmodules/vtkCommonCore.cpython-36m-darwin.so
  Reason: image not found

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/Applications/Slicer.app/Contents/lib/Python/lib/python3.6/imp.py", line 170, in load_source
    module = _exec(spec, sys.modules[name])
  File "<frozen importlib._bootstrap>", line 618, in _exec
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/Applications/Slicer.app/Contents/lib/Slicer-4.13/qt-scripted-modules/AddManyMarkupsFiducialTest.py", line 5, in <module>
    import vtk, qt, ctk, slicer
  File "/Applications/Slicer.app/Contents/bin/Python/vtk.py", line 30, in <module>
    all_m = importlib.import_module('vtkmodules.all')
  File "/Applications/Slicer.app/Contents/lib/Python/lib/python3.6/importlib/ __init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/Applications/Slicer.app/Contents/bin/Python/vtkmodules/ __init__.py", line 15, in <module>
    import _vtkmodules_static
ModuleNotFoundError: No module named '_vtkmodules_static'
Traceback (most recent call last):
  File "/Applications/Slicer.app/Contents/bin/Python/vtkmodules/ __init__.py", line 13, in <module>
    from . import vtkCommonCore
ImportError: dlopen(/Applications/Slicer.app/Contents/bin/Python/vtkmodules/vtkCommonCore.cpython-36m-darwin.so, 1): Library not loaded: /Volumes/D/P/S-0-build/VTK-build/lib/libvtkWrappingPythonCore-9.0.1.dylib
  Referenced from: /Applications/Slicer.app/Contents/bin/Python/vtkmodules/vtkCommonCore.cpython-36m-darwin.so
  Reason: image not found

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/Applications/Slicer.app/Contents/lib/Python/lib/python3.6/imp.py", line 170, in load_source
    module = _exec(spec, sys.modules[name])
  File "<frozen importlib._bootstrap>", line 618, in _exec
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/Applications/Slicer.app/Contents/lib/Slicer-4.13/qt-scripted-modules/AtlasTests.py", line 4, in <module>
    import vtk, qt, ctk, slicer
  File "/Applications/Slicer.app/Contents/bin/Python/vtk.py", line 30, in <module>
    all_m = importlib.import_module('vtkmodules.all')
  File "/Applications/Slicer.app/Contents/lib/Python/lib/python3.6/importlib/ __init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/Applications/Slicer.app/Contents/bin/Python/vtkmodules/ __init__.py", line 15, in <module>
    import _vtkmodules_static
ModuleNotFoundError: No module named '_vtkmodules_static'
Traceback (most recent call last):
  File "/Applications/Slicer.app/Contents/bin/Python/vtkmodules/ __init__.py", line 13, in <module>
    from . import vtkCommonCore
ImportError: dlopen(/Applications/Slicer.app/Contents/bin/Python/vtkmodules/vtkCommonCore.cpython-36m-darwin.so, 1): Library not loaded: /Volumes/D/P/S-0-build/VTK-build/lib/libvtkWrappingPythonCore-9.0.1.dylib
  Referenced from: /Applications/Slicer.app/Contents/bin/Python/vtkmodules/vtkCommonCore.cpython-36m-darwin.so
  Reason: image not found

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/Applications/Slicer.app/Contents/lib/Python/lib/python3.6/imp.py", line 170, in load_source
    module = _exec(spec, sys.modules[name])
  File "<frozen importlib._bootstrap>", line 618, in _exec
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/Applications/Slicer.app/Contents/lib/Slicer-4.13/qt-scripted-modules/BRAINSFitRigidRegistrationCrashIssue4139.py", line 3, in <module>
    import vtk, qt, ctk, slicer
  File "/Applications/Slicer.app/Contents/bin/Python/vtk.py", line 30, in <module>
    all_m = importlib.import_module('vtkmodules.all')
  File "/Applications/Slicer.app/Contents/lib/Python/lib/python3.6/importlib/ __init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/Applications/Slicer.app/Contents/bin/Python/vtkmodules/ __init__.py", line 15, in <module>
    import _vtkmodules_static
ModuleNotFoundError: No module named '_vtkmodules_static'
Traceback (most recent call last):
  File "/Applications/Slicer.app/Contents/bin/Python/vtkmodules/ __init__.py", line 13, in <module>
    from . import vtkCommonCore
ImportError: dlopen(/Applications/Slicer.app/Contents/bin/Python/vtkmodules/vtkCommonCore.cpython-36m-darwin.so, 1): Library not loaded: /Volumes/D/P/S-0-build/VTK-build/lib/libvtkWrappingPythonCore-9.0.1.dylib
  Referenced from: /Applications/Slicer.app/Contents/bin/Python/vtkmodules/vtkCommonCore.cpython-36m-darwin.so
  Reason: image not found

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/Applications/Slicer.app/Contents/lib/Python/lib/python3.6/imp.py", line 170, in load_source
    module = _exec(spec, sys.modules[name])
  File "<frozen importlib._bootstrap>", line 618, in _exec
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/Applications/Slicer.app/Contents/lib/Slicer-4.13/qt-scripted-modules/Charting.py", line 8, in <module>
    import vtk, qt, ctk, slicer
  File "/Applications/Slicer.app/Contents/bin/Python/vtk.py", line 30, in <module>
    all_m = importlib.import_module('vtkmodules.all')
  File "/Applications/Slicer.app/Contents/lib/Python/lib/python3.6/importlib/ __init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "/Applications/Slicer.app/Contents/bin/Python/vtkmodules/ __init__.py", line 15, in <module>
    import _vtkmodules_static
ModuleNotFoundError: No module named '_vtkmodules_static'
Traceback (most recent call last):
  File "/Applications/Slicer.app/Contents/bin/Python/vtkmodules/ __init__.py", line 13, in <module>
    from . import vtkCommonCore
ImportError: dlopen(/Applications/Slicer.app/Contents/bin/Python/vtkmodules/vtkCommonCore.cpython-36m-darwin.so, 1): Library not loaded: /Volumes/D/P/S-0-build/VTK-build/lib/libvtkWrappingPythonCore-9.0.1.dylib
  Referenced from: /Applications/Slicer.app/Contents/bin/Python/vtkmodules/vtkCommonCore.cpython-36m-darwin.so
  Reason: image not found

```

---

<div class="post-metadata">

**Author:** ![jamesobutler](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/jamesobutler/32/7511_2.png) [@jamesobutler](https://discourse.slicer.org/u/jamesobutler)\
**Post date:** [October 6, 2020, 12:27am UTC](https://discourse.slicer.org/t/numerous-errors-on-startup-with-todays-nightly-on-mac/13873/2 "2020-10-06T00:27:04Z")

</div>

Yes, the preview is still unstable due to the recent transition to VTK9. You can view some of the recent VTK related issues at [https://github.com/Slicer/Slicer/issues](https://github.com/Slicer/Slicer/issues). If you need something that works the new snapshot 4.11.20200930 stable release at [https://download.slicer.org/](https://download.slicer.org/) should work.