What kinds of errors?
Sometimes this happens because some other part of the Solution is not compiled or compiled out of order. Try a rebuild all, and if that fails start with the least dependent project up to the the hierarchy.
+++ Rick ---
>Hi,
>
>I have an application which runs fine when I have the solution configuration set to debug. When I change it from Debug to Release I then immediately get loads of errors.
>
>What's going on here?