Error bindind data i in radgrid

Hellow great people,am bindind data from a radgrid using LINQ and this is the error i get

"Property accessor 'Title' on object 'Xpay.MerchantRegistration' threw the following exception:'Object reference not set to an instance of an object.'"

I have used a breakpoint and it shows the list of returned fields but now it cannot intergrate that to the grid,

Here is my code on page load
"List<MerchantRegistration> registrations = db.MerchantRegistrations.ToList();

RadGrid1. DataSource = registrations;

RadGrid1. DataBind();"

Can you guide me how to solve this please.Thank you

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