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the problem has been resolved after device reboot

Thanks, but I did that before and it doesn't work, unfortunately. The option is disabled but Xiialive starts by using headset buttons anyway. My device is HTC Incredible S, Android 2.2.1

That's actually a problem: I've bought and installed Xiialive and enjoyed it - good job! But... when I try to use headset buttons in any other application Xiialive starts immediately and do not let to control anything. Such behaviour seems very annoing for me. Probably is there any method to disable using headset buttons by Xiialive? Or I should uninstall it instead? :(