Hi,
I did face the same situation as you too. What I found is, I placed wrong timer!! I place the ismouseout timer from other class (may be from listbar class) or others. It work fine after I substitute it with the timer come with xpform/xpwizard.vcx.
Both ismouseout does the same thing, but with different strategy.
HTH
I am not the most powerful man in this world.
I am not the worst man in this world either.
I just as same as all of you.
I still need to learn from my mistakes...