Hi Michiel,

This is how I have done it in the past

@inherits umbraco.MacroEngines.DynamicNodeContext
@using umbraco.BusinessLogic
 @{
    try
    {
    //do stuff
    }
   catch (Exception e)
    {
        Log.Add(LogTypes.Error, Model.Id, string.Format("Razor exception caught: {0}", e.ToString()));
    }

}

The exceptions will be logged to the umbracoLog table. You can then view them directly in the db or use the FALM package.

Of course you can also display the excepiton on the page if you want to, e.g.

   catch (Exception e)
    {
        <div style="color:red">@e.Message</div>
        Log.Add(LogTypes.Error, Model.Id, string.Format("Razor exception caught: {0}", e.ToString()));
    }

Hope that helps you,

Jeavon