Hi there, i'm having 2 problems, maybe someone can help me: 1) first I would like to write some tests for my web proj. but 'yesod test' does not run due to a compile time error. i get the same error like on this issue but i got no clue how to fix it: https://github.com/yesodweb/yesod/issues/349 2) second I dunno if my approach is correct. I'm using mongodb and i have entities like so: A name Text B name Text as [A] As it compiles like a charm and i can add A types to B entities, these A entities do not have an _id field. This seems logical to me due to the type A does not have this _id property generated, like described in the book and i do not 'insert' the A type but simply update a B entity. I would like to identify (not by index) these nested A entities as i'm going to delete/update them from time to time. Can you point out the way how I would do that? I also searched alot for more docu on the mongoDB persistent api, is there any? -- richard