dnu publish - System.ArgumentNullException: Value cannot be null

Question

When running the following dnu publish, I get an ArgumentNullException exception thrown.

dnu publish "C:\Project\MyProject" --out "C:\a" --configuration Debug --runtime dnx-clr-win-x86.1.0.0-beta6

Exception thrown:

Restoring packages for C:\a\approot\src\RelatedProject\project.json
----------
System.ArgumentNullException: Value cannot be null.
Parameter name: key
   at System.Collections.Generic.Dictionary`2.FindEntry(TKey key)
   at System.Collections.Generic.Dictionary`2.TryGetValue(TKey key, TValue& value)
   at Microsoft.Framework.Runtime.Project.GetTargetFramework(FrameworkName targetFramework)
   at Microsoft.Framework.Runtime.ProjectReferenceDependencyProvider.GetDescription(LibraryRange libraryRange, FrameworkName targetFramework)
   at Microsoft.Framework.PackageManager.LocalWalkProvider.FindLibrary(LibraryRange libraryRange, FrameworkName targetFramework, Boolean includeUnlisted)
   at Microsoft.Framework.PackageManager.RestoreOperations.<FindProjectMatch>d__7.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Framework.PackageManager.RestoreOperations.<FindLibraryMatch>d__6.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Framework.PackageManager.RestoreOperations.<FindLibraryEntry>d__5.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Framework.PackageManager.RestoreOperations.<CreateGraphNode>d__2.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Framework.PackageManager.RestoreCommand.<CreateGraphNode>d__71.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)
   at Microsoft.Framework.PackageManager.RestoreCommand.<RestoreForProject>d__70.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Framework.PackageManager.RestoreCommand.<>c__DisplayClass69_0.<<Execute>b__1>d.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.Framework.PackageManager.RestoreCommand.<Execute>d__69.MoveNext()
----------
Restore failed
Value cannot be null.
Parameter name: key

The project.json for RelatedProject is as follows:

{
  "version": "1.0.0-*",
  "description": "MyProject.Domain.Model Class Library",

  "dependencies": {
    "System.Collections": "4.0.10-beta-23019",
    "System.Linq": "4.0.0-beta-23019",
    "System.Threading": "4.0.10-beta-23019",
    "System.Runtime": "4.0.10-beta-23019",
    "Microsoft.CSharp": "4.0.0-beta-23019"
  },

  "frameworks": {
    "net451": { }
  }
}

Dias

I am not sure dnu publish is working with xproj file as one of its arguments. Try source directory path (the directory where you have project.json). – Space

@tugberk: Apologies, that was a typo. I am using the project.json path as you suggested. Post fixed. – Dias

Answer 1

The problem came down to the fact that MyProject was targeting dnx451 and RelatedProject (referenced by MyProject) was targeting net451. Changing RelatedProject to target dnx451 fixed the problem on dnu publish.

Dias