Aren't beta's fun? I'm using the 64 bit version, don't know if it matters. I'm sure other oddities will pop up along the way.
Same on my PC, but I found a solution for my notebook. Almost every brand notebook has a utility that manage WiFi. For my ThinkPad I installed Access Connection and I manage all wireless from there.
It is simple to get the old version running. Before renaming shsxs.dll open Task Manager and leave it opened. Rename shsxs.dll. Close Task manager. Open it again. Be ready for a short delay before it opens.
G to C:\windows\system32\shsxs.dll and takeownership then rename to shsxs.dll.old hit enter...then restart and ur back to win 7 style computer...if u want metro back just rename shsxs.dll.old to shsxs.dll and restart..enjoy