Thanks for your responses! It looks like I will have no problem using Windows 8.1 with my UBS GS-911. Very good.
But…what is a "stable?" From Haakon's response, I have to assume it is the regular non-beta program, as in Version 1303.3, right? There must be "stables," and Betas? I did not erase 1303.3 when I downloaded the latest Beta, which I understand will only work for a few months. When will there be a regular non-beta program to replace 1303.3 and how will we know it is available? I check the regular web site occasionally, so I guess that will be it.
Thanks!