Running Windows 7 64-bit SP1 with all current patches with TCMD 13.04.55 x64. The observed behavior is that the TCMD window will vanish. It seems to happen most frequently when I'm minimizing the TCMD window but it can happen at any time. I don't even have to be doing anything in the window. Just this morning the TCMD window was visible on my monitor and I was working in another program when it vanished. I can't replicate this behavior in a reliable way and there doesn't seem to be any rhyme or reason to the timing of the crash. Any thoughts on how I might gather more, helpful, information?