Error When Installing NuGet Packages

Question

When I try to install EF with NuGet in Visual Studio 2013 Pro, I get this error:

Attempting to resolve dependency 'EntityFramework.Commands (≥ 7.0.0-beta4)'.
'EntityFramework.Commands' already has a dependency defined for 'EntityFramework.Relational'.

When I try to install EntityFramework.Core I get this erro:

Attempting to resolve dependency 'Ix-Async (≥ 1.2.3)'.
'EntityFramework.Core' already has a dependency defined for 'Ix-Async'.

What could possibly be the problem, I've seen others with the issue, they suggested installing an upgraded NuGet, which I did. The problem persists. No other solutions have worked.

Any one have any ideas how I can fix this? It's a VSTO addin for Outlook 2013.

Thanks

EDIT:
After restarting VS2013 after updating NuGet I tried to install EF again, got a new error:

Attempting to resolve dependency 'EntityFramework.Commands (≥ 7.0.0-beta4)'.
Installing 'EntityFramework.Commands 7.0.0-beta4'.
Successfully installed 'EntityFramework.Commands 7.0.0-beta4'.
Executing script file 'C:\Users\shenk\Documents\Visual Studio 2013\Projects\Archiver\packages\EntityFramework.Commands.7.0.0-beta4\tools\init.ps1'.
Installing 'EntityFramework 7.0.0-beta4'.
Successfully installed 'EntityFramework 7.0.0-beta4'.
Adding 'EntityFramework.Commands 7.0.0-beta4' to Archiver.
Uninstalling 'EntityFramework.Commands 7.0.0-beta4'.
Successfully uninstalled 'EntityFramework.Commands 7.0.0-beta4'.
Install failed. Rolling back...
Could not install package 'EntityFramework.Commands 7.0.0-beta4'. You are trying to install this package into a project that targets '.NETFramework,Version=v4.5', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.

However when I try to install EntityFramework.Core again, it succeeds now.

I want to use EF6, but cannot find it on NuGet, and when I try to install it with the Microsoft Download Center, it never downloads.

I'm a bit lost here so any help would be appreciated.

Saeed Mousavi · Accepted Answer · 2018-11-05 16:21:39Z

2

Upgrade NuGet to the latest version from here: https://nuget.codeplex.com/releases/view/612846

Update:

NuGet at codeplex has been moved to https://github.com/nuget/home

Simply download latest version from: https://www.nuget.org/downloads

edited Nov 5, 2018 at 16:21

answered Jul 17, 2015 at 21:22

Saeed Mousavi

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ss7 · Accepted Answer · 2015-06-02 16:32:58Z

0

The solution I found was to use IE to download things from Microsoft Download center. I was able to install EF tools for VS2012 and VS2013.

Next to install EF6 I went to Tools -> NuGet Package Manager -> Package Manager Console. In the console I entered Install-Package EntityFramework You can also do Install-Package EntityFramework -pre to get the latest release (7.0.0-beta4)

This worked for me. Unless someone else has a better solution I will accept this one in a day or so.

answered Jun 2, 2015 at 16:32

ss7

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