New version of NuGet not working on VS2010

Question

I've downloaded ASP.NET MVC 3 RC and the new NuGet CTP version.

When I try to install anything in the thru the Package Manager Console I get the an error message. Here are two samples:

PM> nip elmah
Install-Package : Object reference not set to an instance of an object.
At line:1 char:4
+ nip <<<<  elmah
    + CategoryInfo          : NotSpecified: (:) [Install-Package], NullReferenceException
    + FullyQualifiedErrorId : NuGet.VisualStudio.Cmdlets.InstallPackageCmdlet


PM> nip SQLCE.EntityFramework
Install-Package : Object reference not set to an instance of an object.
At line:1 char:4
+ nip <<<<  SQLCE.EntityFramework
    + CategoryInfo          : NotSpecified: (:) [Install-Package], NullReferenceException
    + FullyQualifiedErrorId : NuGet.VisualStudio.Cmdlets.InstallPackageCmdlet

When I use the Add Library Package Reference in the Solution Explorer no message is displayed but the package is not installed.

I tried to revert to NuPack and it works fine but the Package list is not updated (for instance SQLCE.EntityFramework 4.0.8435.1 is not been displayed only 4.0.8402.1).

Any help?

Ben Aston · Accepted Answer · 2012-05-15 17:22:37Z

8

I had the same problem. Deleting my packages folder fixed it.

edited May 15, 2012 at 17:22

Ben Aston

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answered Nov 11, 2010 at 12:23

HansoS

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1 Comment

John Gully Over a year ago

The "packages" folder is located beside the solution file. I was in the project folder and it took a few minutes for me to track down the "packages" folder. Deleting this folder solved the problem for me as well.

Ben Foster · Accepted Answer · 2010-11-10 16:38:06Z

6

I experienced exactly the same problem.

In the end I had to remove everything from the packages directory and go through each project and run an "update-package" for each package I had previously installed.

answered Nov 10, 2010 at 16:38

Ben Foster

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Comments

davidfowl · Accepted Answer · 2010-11-10 17:12:43Z

0

Are you pointing to the old feed by any chance? Or an old local feed?

answered Nov 10, 2010 at 17:12

davidfowl

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1 Comment

Andre Vianna Over a year ago

No. I was very carefull to point to the new feed. But I don't think that the problem is on the feed. It looks like an internal problem of the library.

Martin Capodici · Accepted Answer · 2011-08-16 05:02:54Z

0

I also had this problem.

I solved it by ensuring that I did packed with the nuspec and dll in the same folder and the nuspec name was mydll.dll.nuspec. When I deviated from this I got said error.

answered Aug 16, 2011 at 5:02

Martin Capodici

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