Yes, I did that and when using the VFP base classes it does work. Like this I resolved the same problem in the past already.
My sub classes don't contain any code, therefore I assumed this must be a VFP quirk, but now I realize that we did set some of the properties in our class to "hidden", I think that is the only thing I can still check and probably it is one property that we made hidden that causes the problem.

>Hi Christian, did you try to create the same using basic vfp containers instead of your own classes? If this works then you can start to isolate that the problem is around your container classes. I already check creating that with the basic containers and nothing wrong happened.
>
>John Harold.
>
>>Hello,
>
>>I created a form where I drop several container classes on the form (like five of them).
>>When I instantiate that form, the process of VFP uses 99%, and VFP crashes.
>
>>With this technique I can bring a quad core to its knees, but this is not the purpose of the form. There is no code running, I used >coverage profiler and I can see the only problem are the containers being dropped on the form.
>
>>I have seen this in the past and I could solve it by redefining the container classes as basic VFP container classes instead of >subclassing them, but this time even that does not solve the problem.
>
>>Anybody has an idea/solution to this?
>>Christian Isberner
>>Gamma Research Inc.
>
>>I am coding carefully. If not, call 1-800-RecklessCoding