ModelsBuilder.Original: The type initializer for 'File' threw an exception.

Hi guys

I’ve just started up a totally empty instance of Umbraco, I’ve created some simple DocumentTypes with a couple of properties and the model builder keeps throwing an error.

I’ll include the stack trace below, any help would be greatly appreciated.

Failed to build models. The type initializer for ‘File’ threw an exception.

at Roslyn.Utilities.FileUtilities.OpenFileStream(String path) at Microsoft.CodeAnalysis.MetadataReference.CreateFromFile(String path, MetadataReferenceProperties properties, DocumentationProvider documentation) at Umbraco.ModelsBuilder.ReferencedAssemblies.<>c.<.cctor>b__2_2(String x) in X:\Projects\Umbraco\ModelsBuilder\Zbu.ModelsBuilder\Umbraco.ModelsBuilder\ReferencedAssemblies.cs:line 24 at System.Linq.Enumerable.WhereSelectListIterator2.MoveNext() at System.Linq.Buffer1…ctor(IEnumerable1 source) at System.Linq.Enumerable.ToArray[TSource](IEnumerable1 source) at Umbraco.ModelsBuilder.ReferencedAssemblies.<>c.<.cctor>b__2_1() in X:\Projects\Umbraco\ModelsBuilder\Zbu.ModelsBuilder\Umbraco.ModelsBuilder\ReferencedAssemblies.cs:line 23 at System.Lazy1.CreateValue() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Lazy1.get_Value() at Umbraco.ModelsBuilder.Umbraco.ModelsBuilderBackOfficeController.GenerateModels(String modelsDirectory, String bin) in X:\Projects\Umbraco\ModelsBuilder\Zbu.ModelsBuilder\Umbraco.ModelsBuilder\Umbraco\ModelsBuilderBackOfficeController.cs:line 108 at Umbraco.ModelsBuilder.Umbraco.ModelsBuilderBackOfficeController.BuildModels() in X:\Projects\Umbraco\ModelsBuilder\Zbu.ModelsBuilder\Umbraco.ModelsBuilder\Umbraco\ModelsBuilderBackOfficeController.cs:line 35

About this issue

Original URL
State: closed
Created 8 years ago
Comments: 15

Most upvoted comments

I had this same problem and did not find any of the above solutions to work for me. What did work was removing the reference to System.IO.FileSystem from the project. This would probably not work as well if you are storing media items locally, but my project uses the Azure blob storage provider. What seems to end up happening is that the project uses whatever assembly it can find.

aranm on Nov 3, 2017