Timers, CwMenu and execLongOperation:

[farlocco]

Hi to all,
I have a problem with timers,menus and WbApplication new execLongOperation:.

If I start a timer and after x seconds it execute a method that include WbApplication new execLongOperation: (display a message with Operation in progress. Please wait ...)
and I have opened a Menu, from MenuBar o popup menu, I always get this error: "Invalid operation during callback".

Can anyone help me?
Thanks a lot.
Riccardo