Hello David. I don't know if you had a interest or chance to look at the code that I posted earlier on this thread but it is a similar problem to what Fabio is having. Though taking the "m." out of his assignment expression fixes his problem not making an assignment to a member of a class that is a object reference that also has an _assign method does cause problems that people should be aware of. Just FYI

UPDATED:
In my code earlier I also tested it with the "m." prefix, however taking this prefix out still causes C5's

Also you don't have to go in and out of VFP to cause C5s Just run and crash.