Can you be more specific on these classes? What's their VFP base class? What are they doing - or suppose to be doing? Maybe you can tell me something about what MM form you're using? If you know, where it's freezing up?

Remember that the anotomy of a MM Biz Class is more than just a simple container. There a few other things going on behind the scenes. The biz objs are registering themselves with the form, registering with one another if you have a parent child relation.

One place to look at is whether or not you have properties or methods that maybe conflicting in the Mere Mortals Framework or maybe overriding the default behavior of the framework.

Another place to look at is on your control objects on the form. If you put an incorrect "ControlSource" your form will pretend to be loading but does nothing. This is common on grids, combo boxes, etc. Kevin catches all the invalid "ControlSources" for TextBoxes.

Hope this helps!