Rosegarden and Muse, probably using the same code, kick about numerous ladspa
plugins missing headers--are you sure this is a ladspa plugin?
Freecycle, on the other hand, simply polls and loads them all up with nary a
burp. (My local compiled version does segfault afterwards but that is another
issue.)
If they are good for the goose, why not the gander (honk!)?