Sometimes in my project, some forms are not recognised as type "form". (They
are actually inherited from another one of my forms).

However, when this happens I can only view the code. The icon in the
Solution Explorer is the type for a module, not a form. It also happens
without my making any changes to the forms - i.e. I just open the Solution
one day, and they're broken. Normally I can make a few edits and get it
working, but then I rollback my changes (to what it was before) and it's
still working!

It seems to happen randomly for some forms and not others. This is strange
because they are all inherited from the same form.

At the moment it's a pain because half of the forms in my project think they
are modules :-(

Any ideas please?

Thanks,

Steve