On again Off again! Puntuado con 2 de 5 estrellas

I have been downloading from VidxDen & VidBux for years. A month ago Downloadhelper didn't recognize these locations. I tried going back a few of versions until I got them back. Last week it happened again, this time I cannot get them back. Every now and then the updates remove what's been working all along.

Esta valoración es de una versión anterior del complemento (4.9.12). 

Sorry, but it's not the case. Newer versions of VDH do not remove older features. Maybe the sites you use changed to a protected streaming protocol that cannot be captured by VDH but using older versions won't help.