This post is written as a result of attempting to run an existing EPiServer CMS 6 R2 solution on new build Windows 8 machine. If you are trying to use the EPiServer 6 installer to install a new site on Windows 8 take a look at Arild Henrichsen's blog on the EPiServer 6 Powershell bug on Windows 8. However if you are having trouble running an existing EPiServer CMS 6 R2 solution on Windows 8 read on...
EPiServer 7 adds many great new features but the new edit mode is really different from "old" edit mode. Personally I think EPiServer 7 edit mode is easier for editors new to EPiServer but some seasoned editors may still be very comfortable with "old" edit mode (at least for a short while).
I was discussing this with a client and they thought that we could upgrade an EPiServer 6 R2 site to EPiServer 7 quicker than they could arrange training for all of their editors for EPiServer 7 (the client has editors in several offices across the world).
So I set out working out how to hide the new edit mode for selected editors (at least for a short period anyway).