I'm using Chrome.
Looks like the problem is not completely solved - I can now load pics to my PC folders from the cameras, but I've had a couple of issues with 'Not Responding, or just refusing to connect at all..
Also, uploading to the forum, or, for example to a e-mail, works intermittently - I may get one pic, or six attached, and then it may 'freeze', meaning I have to re-start the computer to be able to do anything else.
My supplier /computer friend has identified this as probably being due to a background programme, associated with system updates, which needs to be adjusted or postponed, as it is 'hogging' the memory, and he's working on this, and will hopefully get it sorted tomorrow - he ran out of time this evening..
So much for progress and bl**dy Win !0 !!!