Sometimes when not having full permissions (or using third party software) you can't get around some error message boxes (For example when you don't have b_virtualserver_log_view but want to manage icons) you always have that annoying sound and have to press enter or click OK. It doesn't sound much but it sums up when using YaTQA on a daily basis and counters YaTQA's main purpose, accessibility (like not having to learn all the query commands).
So i would suggest to add a new checkbox to the settings that - when enabled - shows the last error message on the lower left corner instead of the message box.