Many thanks, Daniel.
I've just installed and configured this 3.0.1 version, and the function really is now restored (in Win10x64 FCU, including using my Explorer context menu entry for BG to load multiple pages. Drag & drop from Explorer doesn't work, but I haven't had cause to use that, so it probably wouldn't be an issue for me, though I expect that for some people it could be important. Anyway, really nice to be able to use the new version now.
Incidentally, as usual the installation was a real pain up the backside, and I do wish this would get fixed, as I get this with each update nowadays. The installation itself appears to run okay, but then when I try to run the program it throws up that infamous Parsing Error message and exits. Each time I have to do a lot of faffing around, deleting the contents of the profile folder and then copying in most of the contents of a backup copy of the profile in order to have all my settings / extensions restored. There must be a simple way to stop that being necessary.
Many thanks again for a nice piece of work!
Philip