Why is this?
Facebook has sent me a Cease & Desist
notice (click here to view) stating
that PhotoJacker/FacePAD violates
Section 3.2 of their Statement of
Rights and Responsibilities:
You will not collect users’ content or
information, or otherwise access
Facebook, using automated means (such
as harvesting bots, robots, spiders,
or scrapers) without our permission.
PhotoJacker/FacePAD, is in some way, a
scraper, since it allows the end-user
to download photos (that the user can
manually download by right-clicking on
the photo and pushing saved
target/image as…) from Facebook to
their computer in an expeditious
manner. For the record, scraping is a
very loosely defined term, and not all
definitions I’ve read make it sound
like PhotoJacker/FacePAD is a scraper.
Regardless, I am currently a full time
student, and I really don’t have the
time to deal with this problem.
Therefore, I have decided to comply
with Facebook’s takedown notice. The
program has been removed from Mozilla,
and therefore, it can no longer be
accessed or downloaded.
Source: PhotoJacker - Cease & Desist / Facebook Takedown Notice
Any other workaround?
Well, downgrading is an option if you still have the plugin lying around. Otherwise I don't think that you will find plugins that are still working. I guess facebook contacted all the creators of such plugins to prevent them from beeing available and working.
Another solution could be installing a second firefox (the one with the plugin when it was still working). Assuming you don't have to download whole albums every day or so, this should be manageable.