FRStack dotnet install failed

Hi,

I have a new Pi that I am trying to load dot net on and I am getting the following error when I this execute this command :[email protected]:~/Downloads $ sudo tar -zxf aspnetcore-runtime-3.1.7-linux-arm.tar.gz -C /opt/dotnet

tar (child): aspnetcore-runtime-3.1.7-linux-arm.tar.gz: Cannot open: No such file or directory

tar (child): Error is not recoverable: exiting now

tar: Child returned status 2

tar: Error is not recoverable: exiting now

I did some research and thought the issue was that I was running an ARM 7 processor so I loaded version 5.0.x ...

When I try to run dot net I get this error:

[email protected]:/usr/local/frstack $ dotnet FRStackWebApi.dll --urls "http://*:5025"

It was not possible to find any compatible framework version

The framework 'Microsoft.AspNetCore.App', version '3.1.0' was not found.

 - The following frameworks were found:

   5.0.0-rc.2.20474.4 at [/usr/share/dotnet/shared/Microsoft.AspNetCore.App]

You can resolve the problem by installing the specified framework and/or SDK.

The specified framework can be found at:

  - https://aka.ms/dotnet-core-applaunch?framework=Microsoft.AspNetCore.App&framework_version=3.1.0&arch=arm&rid=raspbian.10-arm

I am hoping Mark will see this and advise on how to proceed. I do have the luxury of blowing out the OS and reloading. Not sure if it matter but I am running a 64Gig SD card.

Mick