>Did you verify the error under a win machine belonging to someone else ?

Why should I? This is a hobby project. There's only one machine on which it needs to work, and even there it's used about once a week. I'll solve it this way or other, but I was curious to find the cause. I kind of remember I had something similar ages ago, so just wanted to check if anyone's memory is better than mine.

Besides, I do have one W7 machine, but it has no VFP on it, and it was turned on for about three days in the last two months. Just setting up the environment on daughter's machine would take two hours, and that'd be two hours when two out of three adults in a house with four children are busy... Unfeasible.