error MSB4018: The "TransformOnBuildTask" task failed unexpectedly.
error MSB4018: System.Exception: Could not extract targetBuilderCallback from Microsoft.Build.BackEnd.TaskHost
error MSB4018: at Clarius.TransformOnBuild.MSBuild.Task.TransformOnBuildTask.GetProjectInstance()
error MSB4018: at Clarius.TransformOnBuild.MSBuild.Task.TransformOnBuildTask.Execute()
error MSB4018: at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
error MSB4018: at Microsoft.Build.BackEnd.TaskBuilder.<ExecuteInstantiatedTask>d__26.MoveNext()