I have enjoyed using this product for a while but the repeating issues with firefox updates is infuriating!
In response to the develpers last answer to this question, since I didn't want to wait to access my banking/phone/cable etc., information;
from(by Abine, Inc., the online privacy company (Developer) on September 19, 2013 ),
"...2), in MaskMe, go under 'Settings' and scroll down; 3), you'll see an option to import your data from Privacy Suite, so just follow the steps on screen :)"
Well, after my investigation, it seems that since privacysuite is disabled at the time, the "settings" page does not detect it as being installed so it doesn't provide the option. At least, that seems to be what was happening in my case. I tried refreshing the page and restarting firefox and still, no option on the settings page. So I downloaded the setup for firefox 23.0.1 from a page that didn't redirect to mozilla, installed, found the privacysuite icon missing, though it is still installed and enabled, and the maskme icon is in it's place.
I added the privacysuite icon back, went to the maskme settings page and viola! The option to import was there.
Basically, your answer didn't/doesn't work.
Next question, when are you approximating an update for firefox 24 support?
It's been over a week, hasn't it?
Does all of your software have these update issues with firefox?