Make sure they have the new SWF cached. If not Try changing the name of the main file and try again. Old 1 is probably cached.
Did you upgrade the flex sdk version? This could lead to similar issue but to every1.
I am 100% sure that they have the new swf, as I have spoken to them on the phone to confirm this.
This is driving me absolutely crazy.
When you are saying nothing happens on the button click... what do you mean? What id the expected behaviour and how have you implemented that?
Please note that click is a combination of Mouse_DOWN and MOUSE_UP. If the hit target becomes different in both of them(ie the component size changes), click event is not dispatched.
I've seen something like that. Are they using virtual software like Citrix ? If so , you may have to delete their profile metadata.
If they aren't using virtual software the error could be caused by something in the architecture. For example clicking in the order A->B->C the D button works. But some users are clicking in the order of B->C->A and the D button stops working because the second order changes the state of something somewhere. I'm guessing the issue is probably caused by the last reason.
Its just a plain button on a TitleWindow component. Compiled in Flex 3.5.
The button is clickable, but the event does not fire off at all for some users. This is an app that has been running for 18 months with no such problem before. I have one user that has two identical machines; the button works as expected on one machine, and not on another.