Still doesn't work/New beta version works Puntuado con 4 de 5 estrellas

I have now an empty 0 octet flv. folder instead; before I had a bad working web folder. No more mp4 like before. When I select this option, it still gives a 0 octet folder. Please UPDATE!
I have seen the new beta version 4.9.18a1. I updated it and everything works again. Thanks to communicate here the beta versions too. Back to 4* and hopefully 5 soon. Thanks.

Esta valoración es de una versión anterior del complemento (4.9.17). 

Some bugs remain in the beta version Puntuado con 4 de 5 estrellas

The MP4 videos mostly still not work. they are downloaded but without sound and without image with QuickTime. MyPlayer show the images without sound: i.e. http://www.youtube.com/watch?v=aL4FOvIf7G8

Esta valoración es de una versión anterior del complemento (4.9.15). 

Works better but still have bugs. Puntuado con 4 de 5 estrellas

I have been downloading this beta version but it freezes Firefox and lead me to a converter page which doesn't work because all is frozen. Nothing can be downloaded!
The reason of my failure was the convert button was checked on the new beta version. I unchecked it and it worked on Vevo.
However, when I check MP4 480p on http://www.youtube.com/watch?v=DTYsElEGswc the video cannot play any sound. It only works with quick downloading.

Esta valoración es de una versión anterior del complemento (4.9.15). 

We need your help to provide a "satisfying update". Please use the bug entry at http://bugzilla.downloadhelper.net:8080/show_bug.cgi?id=536 to communicate. Provide us with details about the freeze: platform, firefox version, downloaded link, converter page url, ...

Bug on YouTube Vevo videos Puntuado con 3 de 5 estrellas

VideoDownloadHelper cannot download all the Vevo YouTube videos anymore. It says 0 bytes.Thanks to fix this bug

Esta valoración es de una versión anterior del complemento (4.9.15). 

Puntuado con 3 de 5 estrellas

VideoDownHelper cannot download all the Vevo YouTube video anymore. It says 0 bytes.
Thanks to fix this bug

Esta valoración es de una versión anterior del complemento (4.9.15).