Hi steve-bbb,
I have the XT (bean shape) and the XT Pro (rack). When connected by USB, the XT can be seen by Tone Locker but the software times out (seems similar to you) whilst the XT Pro works everytime. I have deleted and reloaded the drivers for XT using Monkey, I have updated all possible drivers on my PC too but it's always the same. I contacted Line 6 through the help section on their website a number of times, the response is always update the drivers, BIOS, etc.