This sounds like a bug to me. Your class should not need to be serializable if you are excluding it from the save. You should submit the issue to Infragistics Developer Support along with a small sampe project demonstrating the issue.
Get Help
Hi shmuly,
you have to mark your class 'SDP.Win.Components.SDPLookupValueList' with the 'Serializable'-Attribute.
Best reagards,Ramon