I've read around many questions but I've not been able to find the right answer for me.

As I try to compile a project in VS2012 I have this result:

The command "....\tools\bin\nuget pack Packages\Lib.Html.nuspec - OutputDirectory ....\bin\Zip\Packages -NoPackageAnalysis" exited with code 1.

I looked for the line of code in my .csproj file, where the error should be, and there is: 

```
<Exec Command="$(ProjectDir)..\..\tools\bin\nuget pack $(ProjectDir)Packages\Lib.Html.nuspec -OutputDirectory $(OutputPath)Packages -NoPackageAnalysis" />  

```

What am I doing wrong?

[EDIT] 
Launching the Debug of that project and ignoring "building errors", I have a new alert:

"Visual Studio cannot start debugging because the debug target '[project.exe path]' is missing.
Please build the project and retry, or set OutputPath and AssemblyName properties appropriately to point at the correct location for the target assembly."