Hi, I'm a bit of a visual studio noob. I have just restarted a project in which I am using NHibernate. The project worked fine last time I used it but now is giving the following error.

System.IO.FileLoadException: Could not load file or assembly 'Iesi.Collections, Version=1.0.0.3, Culture=neutral, PublicKeyToken=aa95f207798dfdb4' or one of its dependencies. The located assembly's manifest definition does not match the assembly reference. (Exception from HRESULT: 0x80131040) at NHibernate.Cfg.Configuration.Reset() at NHibernate.Cfg.Configuration..ctor(SettingsFactory settingsFactory) at NHibernate.Cfg.Configuration..ctor() at Luther.Dao.Repositories.Session.NHibernateHelper..cctor() in NHibernateHelper.cs: line 18

I notice the current reference to the iesi dll ia at 1.0.1.0. What is the best way to get this up and running again? Try and find the appropriate version of the dll or sort out the manifest file?

Any pointers much appreciated.