Neil,

>I persist the patient's data between postbacks in this way. These are small one record datasets so I don’t take a big resource hit. – This worked fine in asp.net 1.0 and 1.1
>
>But in asp.net 2.0…
> Any page that has data persisted in this manner *cannot* redirect to a page that has aspcompat=true in the page directive without throwing asp compat errors. Remember that ASPCOMPAT should be set to true when your pages incorporate Visual Foxpro COM interop.

We have added a new constructor overload to mmDataSet that handles serialization in this scenario. It will be released in a few days with MM .NET 2.1.

Best Regards,