taskbar icons disappeared

I am running TDE R14.0.0. Recently, I configured the panel (I think it was just positioning at the middle, doing transparency--which did not work--and choosing the display style and taskbar grouping,) and my taskbar icons disappeared. I changed around the things I had changed many times, and 'show icons' was selected (except a few times turning it off and on to see if that worked)... but they will not come back. If anyone has a solution, it would be good to CC the message to my e-address, because I do not use Gmane much right now, rather than Usenet.