Hi again. Now I'm having trouble to download the `OpenSpecFun` artifact. It happen

Hi again. Now I’m having trouble to download the OpenSpecFun artifact. It happens when adding a package from a custom registry, please see the screenshot attached with the traceback (the user claims they’re unable to copy/paste from the julia console?)

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I have to mention this happened on windows 7 with powershell 2.0 and .NET < 4.5

We were getting the following traceback after Pkg.add("Anything")

Downloading artifact: OpenBLAS32
Exception setting "SecurityProtocol": "Cannot convert null to type "System.Net.
SecurityProtocolType" due to invalid enumeration values. Specify one of the fol
lowing enumeration values and try again. The possible enumeration values are "S
sl3, Tls"."
At line:1 char:35
+ [System.Net.ServicePointManager]:: <<<< SecurityProtocol =
    + CategoryInfo          : InvalidOperation: (:) [], RuntimeException
    + FullyQualifiedErrorId : PropertyAssignmentException

Exception calling "DownloadFile" with "2" argument(s): "The underlying connecti
on was closed: An unexpected error occurred on a send."
At line:7 char:24
+ $webclient.DownloadFile <<<< ("https://github.com/JuliaBinaryWrappers/OpenBLA
ingw32-libgfortran5.tar.gz", "C:\Users\manuelma\AppData\Local\Temp\jl_zIYF4alXQ
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : DotNetMethodException
ERROR: Unable to automatically install 'OpenBLAS32' from 'C:\Users\manuelma\.jul

The solution was to install .NET 4.5 and Powershell > 3. This is mentioned in the platform specific instructions but I managed to miss it.

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