You are not alone
If this is of any reassurance to you there are a lot of other people having troubles with f4l.
I am currently on f11 and I tried to install f4l 'through the main entrance' (with the .rpm package installer) but it ripped along the stitches afterwords.
There is a very beautiful program for animation under linux SYNFIG but it generates some exotic file formats.
I found also on Internet script commander for flash called SSWF, GNASH plug-ins and SWFDEC library and I wonder if there is somebody brave enough to make out of the 'seven samurays' a serious flash editor under linux.