NuGet.exe pack gives access to the path is denied

When I try to pack my MVC project (`NuGet.exe pack`) I get: ``` NuGet.exe : Access to the path '...' is denied. ``` This happens to be the case for all files in the `content` and `script` folder of my MVC solution. If I remove the readonly flag on all these files `NuGet.exe` is able to create the NuGet package. Why do I have to remove the readonly flag? Is there another way? I'm using TFS which specify the readonly flag on all files under source control. I am running: - NuGet Version: 1.7.30402.9028 - Microsoft Visual Studio 2010 Version 10.0.40219.1 SP1Rel I'm using the `NuGet.exe` that you get when you install the NuGet package NuGet.CommandLine which is located at http://nuget.org/packages/NuGet.CommandLine.