>I have isolated the problem thanks to Naomi's tip : the use of a function (starting with an = sign) in a property (in the tag property more specifically). VFP 7.0 and follwowing seems to have problems with that.
>
>I'm still trying to understand with exactly goes wrong. I'll keep you informed if you want.
>
>Special thanks to Naomi but also to Yuri !

You're welcome. It was discussed here few times, what's how I knew about that problem.