It happened this morning. The power went out for a few seconds but that was enough. Many times I have started a scan as early as possible in the morning only to have it not finish by the time I want to use my computer. Continuing the scan just slows down the computer so i have to pause it. Sometimes what I do causes the computer to freeze and unless I turn off the computer, it won't do anything. In some cases it's already too late for the scan because I get a message sayig it can't scan. Turning off the computer, even if the scan was paused, means restarting it, which generally means i have to restart at the end of the day. I did learn how to keep the computer from going to sleep (which doesn't prevent the scan from continuing, but only after I take action) after I hadn't used it for a while, allowing the scan to finish without my turning the computer on manually several times. If the computer is turned completely off, everything must start over.
I asked a tech support person about this and was told they'd have to change the software but he said he would suggest this.