Jess,

>>We had the same type of problems when we switched one of our applications to 3.5. unfortunately the BO generator doesn’t offer any non entity centric options. When we switched we hadn’t intended to upgrade the whole BO layer to entities and ran into all kinds of problems. I think the best advice is that if you don’t intend to use entities don’t move the project into 3.5. All the new projects and all the projects that where already using entities works well.
>
>If that so, it's a mistake to upgrade to 3.5 because we can't make use of the old BOs 100% as is. This is a huge problem....

You should definitely be able to use your old business objects with the latest version of MM .NET. I'll send you private e-mails off-line to get this resolved as quickly as possible then we'll post the result here.

Best Regards,