I have a c# solution containing the following projects -

a windows form control library containing some custom windows form controls
a windows form app with forms containing these controls (with a local
solution reference to the controls proj)

Randomly(?) the designer will just wipe these controls off the form (it will
even try and check the form out to do the damage! - if it already is then
its usually goodbye to a few hours work :o/ ). Sometimes building the
controls project again will magically bring them back but more often than
not its a lengthy solution restart... What causes this behaviour and how can
it be prevented?

Frustrated,

Simon