Hi Vivianne,
I'm not exactly sure why you are having so many issues. I too have upgraded to Windows 10 and have had no issues at all with VSD. Try deleting your files from your server then republishing your website. In the past I have encountered this issue but usually just with one site not all.
I've tried rebuilding my site on the new RSD program, but I'm having problems trying to figure out to do it, and there are no CoffeeCup tutorials on it yet
The tutorials that are out for Responsive Layout Maker will work with RSD as the controls are almost identical. If you check out my youtube link there are some good tutorials on there too. If you are stuck and need some help transferring your VSD site to an RSD site just open a support ticket and tell them your needs. Coffeecup has a service going right now to help users such as yourself get their website converted. Once you have it converted they will supply you with the RSD file and you can go from there.
As your learning the controls of RSD building websites with it will become much easier. If you get stuck please come back to the forums and ask your question and we would be glad to help you.
If you want more personal training on RSD to teach you the basics I have a service going for this. You can contact me through my website link below and I can provide you some one on one training of the basic controls of RSD. Please note I do not work for Coffeecup. I am just a CC user like yourself.
I truly hope things work out for you with getting your VSD built websites back up. I know I would be stressed out if all of my sites stopped working too.