Messages

1

General Questions and Answers / Re: Virtual NanoLab Error

« on: April 12, 2017, 14:23 »

After Installation:
(1).   Right-click on the Virtual NanoLab 2016.4 icon.
(2).   Click ‘Open’ to initiate an instance of Virtual NanoLab… an icon pops up saying ‘Loading Projects’. It actually takes a considerably long time to load all projects…In fact, more than 10 minutes!
(3).   Click ‘Projects’ tab, and create a new project “Trial’.
(4).   Click BUILDER.
(5).   On the Builder menu, click ‘File’, ‘add’, 'From Plugin', 'Nanosheet'.
(6).   Set n =4 and m= 4.
(7).   Click ‘Build’.

 The same Virtual NanoLab  error message pops up.

2

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.
[/size]

What causes this error, and how can it be resolved? Thanks a lot for suggestions.

Regards,
Akan