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Topics - Akan

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General Questions and Answers / Virtual NanoLab Error
« on: April 12, 2017, 12:51 »
Dear All,
During my free trial of VNL-ATK , all attempts to use the BUILDER to load a simple structure has failed. In all cases, the error is:

Traceback (most recent call last):
  File "C:\Program Files (x86)\QuantumWise\VNL-ATK-2016.4\Lib\site-packages\AddOns\GrapheneBuilders\GrapheneBuilders.py", line 416, in _build
    structure = self._generateStructure()
  File "C:\Program Files (x86)\QuantumWise\VNL-ATK-2016.4\Lib\site-packages\AddOns\GrapheneBuilders\GrapheneBuilders.py", line 466, in _generateStructure
    bond_length = widget._distance.value()*Angstrom
  File ".\zipdir\NL\CommonConcepts\PhysicalQuantity.py", line 2004, in __mul__
NLValueError: Multiplying the unit Ang with "None" of type <type 'NoneType'> failed.
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What causes this error, and how can it be resolved? Thanks a lot for suggestions.

Regards,
Akan

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