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Category: Windows Vista
Type: Question
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Hello I am moving ahead towards Autodesk University and I am just from my vacation in Andalusia and then moving with full speed and here is a little issue that should be immediately arise with the Revit String utility which is published in last week and I am using Windows vista as an operating system and I need to unlock the zip file but I cannot  and the error I am getting is as follows...

Revit cannot run the external application "RevitPythonShell". Contact the provider for assistance. Information they provided to Revit about their identity: asdf.

Could not load file or assembly 'file:///C:\addins\Daren Thomas\RevitPythonShell\RevitPythonShell.dll' or one of its dependencies. Operation is not supported (Exception from HRESULT: 0X80131515)

Kindly provide me the solution in fixing this issue.

Thank you.

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# Comment Id: 59009

Hi Mikee

Thank you for posting this question in techyV. The problem arises due to a security option.

The steps required to resolve this issue are:

1. Right-click on the DLL in explorer.

2. Click on “Properties”

3. Then click on “unblock” (as shown in the screenshot below)

It is always recommended to perform these steps for the .zip file, before the contents are being extracted.

It ensures the fact that all the files present in the archive are not blocked.

For instance, if one had to do this for the QRCodes for AutoCAD plugin:

Hope this helps !