VFP 6.0:
I created a new object and saved it using SaveAsClass method into a VCX file. Then I tried to insert it into a grid's column using the NewObject method. Till now everything worked well. But now I took new VFP runtime with SP3 and the same code doesn't work. The NewObject method causes an error 1111 - Invalid file descriptor. I tried also the AddObject method with the same result. The VFP help and also MSDN documentation doesn't say much about this error.

Have you any experience with it? What's wrong?
Thanks.