hi! do you mean that you can't access it from the program's help menu? you should be able to click Help > Contents and Index...i have seen in the forums that sometimes this shows up blank, but as far as i've heard, if it shows up blank, uninstalling then reinstalling the program fixes it.
be aware that sometimes the settings of your default browser may block the manual so that it brings up a blank page...if that's the case, change your internet settings, or use a different browser.