Hi,
I've the same error as avada and dbkarm. I've experienced the same type of error on my machine, but it seems like a rather difficult error to reproduce on other machines. The link provided by avada works just fine for me, but this link **External links are only visible to Support Staff****External links are only visible to Support Staff** doesn't work for me. In the linkgrabber the video's name is missing and it just says: "(1080p_30fps_H264-128kbit_AAC).mp4". When I try to reproduce the error, JDownloader successfully managed to grab 134 YouTube videos (from several different YouTube channels) and naming them correctly, but when it came to the 135th video, the bug occured. The error seems to only occur on videos from certain YouTube channels. In my case the YouTube Channel is "ChillYourMind".
If I clear my linkgrabber and I randomly copies video URLs from the affected YouTube channel (**External links are only visible to Support Staff****External links are only visible to Support Staff**), the error occurs after JDownloader have successfully grabbed and named 27 videos, but on the 28th, the bug occurs once again. The video affected this time is **External links are only visible to Support Staff****External links are only visible to Support Staff** .
I did a third round from the same YouTube channel. The bug occurred on the 22nd video (**External links are only visible to Support Staff****External links are only visible to Support Staff**).
Log:
25.02.17 22.36.22 <--> 26.02.17 03.37.22 jdlog://3559379150841/
I've disabled the setting where JDownloader creates a new folder for every file you download. The YouTube plugin is set to only grab the best video, description, subtitle, audio etc. The plugin's naming settings seems to be the default (I haven't touched them). I use JDownloader 2 for Mac.
The plugin's naming settings:
http://i.imgur.com/A9mOIYh.png
Written February 26 2017
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So a day has past since the text above was written (needed to be approve before I could post). However, now the links that I gave as examples works, they do not produce the error as they did yesterday).
Links where the error has occurred (YouTube channel in parentheses)
February 27 2017
**External links are only visible to Support Staff****External links are only visible to Support Staff** (J Alvarez)
**External links are only visible to Support Staff****External links are only visible to Support Staff** (J Alvarez)