Nota Bene 10 is currently in Beta testing stage, Beta 12 is available and Beta 13 will soon released. I have been working with their Technical Support group since summer 2012. I was always able to install Nota Bene 10 easily enough, but there were initially some problems with printing and file saving. The printing problems have now been solved, and Nota Bene files print normally. File saving problems will be solved on Beta 13. The one problem I continue to experience is in opening old Nota Bene files in Nota Bene 10. They open as "read-only" files. I have worked with both Crossover and Notabene technical support and this still remains an issue, although one can save the old NB files as .rtf and edit them in this format. Crossover technical support tells me that this last problem is one with Wine, the basis of Crossover, and will eventually be solved.
I install the Beta versions of NB in the Windows XP "bottle" that pops up automatically in Crossover. The most recent version of Crossover allows for Windows 7 and Windows 8 "bottles" but I haven't been able to install NB in one of those.
For some of the problems mentioned here, I advise people to contact NB Technical Support.