Are you certain you’re opening the correct file?
It can be a tad confusing when switching over. RapidWeaver 8 makes a COPY of your project file – it leaves the RapidWeaver 7 file untouched, I guess as a just-in-case fallback if something goes wrong.
The files should have the same name but:
RW8 file: Purple and blue
RW7 file: Blue and yellow
if you have extensions enabled in the Finder the RW8 file will be called <filename>.rw8 and the RW7 file will just be called <filename>.rw
Make sure that you’re working on the .rw8 file – the purple one.
Sorry if that stuff is obvious. It’s hard to tell how excerpt/novice each user is. If you’re already know this stuff and still seem to be having trouble saving, I’d recommend contacting Realmac Support. Not begin able to save is a pretty bad issue – best to get that resolved quickly.
Isaiah