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Asked: 2026-06-02T07:04:42+00:00

The following code runs fine on AppHarbor . public virtual void button1Clicked (object sender,

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The following code runs fine on AppHarbor.

public virtual void button1Clicked (object sender, EventArgs args)
        {

            button1.Text = "You clicked me";
            MongoServer ms=MongoServer.Create("mongodb://sbose78:xxxxx@staff.mongohq.com:10068/BOSE");
            MongoDatabase db= ms.GetDatabase("BOSE");
            MongoCollection<User> users=db.GetCollection<User>("users");
            button1.Text=users.Count().ToString();


        }

However it runs into an exception on my Ubuntu box.
I’m using Monodevelop.

Server Error in '/' Application
recursionPolicy != NoRecursion not currently implemented

Description: HTTP 500. Error processing request.

Stack Trace:

System.NotImplementedException: recursionPolicy != NoRecursion not currently implemented
  at System.Threading.ReaderWriterLockSlim..ctor (LockRecursionPolicy recursionPolicy) [0x00000] in <filename unknown>:0 
  at MongoDB.Bson.Serialization.BsonSerializer..cctor () [0x00000] in <filename unknown>:0 

Version information: Mono Runtime Version: 2.6.7 (Debian 2.6.7-3ubuntu1); ASP.NET Version: 2.0.50727.1433

What could possibly be happening?

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1 Answer

  1. Editorial Team

    You have a version of MonoDevelop (Mono actually) that is too old.

    We test against:

    MonoDevelop 2.8.2
    Mono 2.10.1

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