Timeout error when autoguiding with FW8G-STT

I have been using my STT with the self-guiding camera for about 2.5 years with the same setup, using the camera add-on with TheSky to capture the images. This problem is new. Over the past two nights, I have been receiving timeout failures pretty frequently and randomly. I should stress here, I have changed nothing in my setup, which has worked well with one exception discussed below.

The timeout would shoot a code 8003 or 8001, and TheSky would temporarily lock up. After I dismissed multiple error windows, I could disconnect and reconnect the camera, and it would work for a while. Where it gets a little interesting is, that I was doing 3 second exposures for the autoguiding. I could only complete about one in three 5 minute subs without the above described crash. I switched to 12 second timing (6 second exposure and 6 second delay) for autoguiding, and I was able to collect about 20 5 minute subs without error. When I lowered the timing to 9 seconds, sub failed as above. At 12 seconds I had only two failures over the night. The voltage diode remained green throughout this process.

I swapped in new USB cables, as well as tried different ports on my computer, and this did not solve the problem.

Any guidance would be appreciated.

The exception: I hade a similar issue about a year ago. The camera would shut down when I was doing 0.5 second autoguiding subs. When I increased the timing to 2-3 seconds it worked flawlessly. I am not sure this is related, as the error was somewhat different, I did not notice the voltage diode during this episode, and have always related this to a low voltage issue.