Hi all, ive got a .dll im trying to add a reference to, and i tested it out in a new project just to make sure it all worked before using it in my main project, and it did.

So then i open my main project to add it in, only i get this error:



Now my eye sights crap but try as i might i don't see no drop down box for setting '.net framework.' anywhere, ive goen into optiosn to see if there was an advanced view for project propertiues, thinking maybe the options there just hidden, but no.

Can somebody tell me were it is, Thanks.