I am trying to bulk insert documents into MongoDB (so bypassing Mongoose and using the native driver instead as Mongoose doesn\'t support bulk insert of an array of document
I had a similar problem, it was that I was querying a field that didn't exist in the schema using the $ne(other query operators may have a similar problem)
var TestSchema = new Schema({
test:[]
});
...
models.Test.findOne({"test2": {$ne: "t"} })...
In the example above I am testing for test2 instead of test