Reported originally at: https://bugs.launchpad.net/ubuntu/+source/totem/+bug/609855

Binary package hint: totem

Using Ubuntu 10.04 and Totem 2.30.2

When doubleclicking on a YouTube search result, a dialog pops up saying:

An error occurred
Could not open location; you might not have permission to open the file.

In the terminal, the following error message is printed:

** Message: Error: "http://www.youtube.com/get_video?video_id=y9Xtn_KwsW4&t=vjVQa1PpcFOreYC64yTLRY9InBddsNr0ZpPtX0lhKc4%3D&fmt=18": Not Found
gstsouphttpsrc.c(1096): gst_soup_http_src_parse_status (): /GstPlayBin2:play/GstURIDecodeBin:uridecodebin0/GstSoupHTTPSrc:source:
404 Not Found

Another comment of mine:

Also, I see this on the terminal several times:

$ totem
libgdata-Message: Unhandled XML in GDataYouTubeVideo: <yt:accessControl action="comment" permission="allowed"/>
libgdata-Message: Unhandled XML in GDataYouTubeVideo: <yt:accessControl action="videoRespond" permission="allowed"/>
libgdata-Message: Unhandled XML in GDataYouTubeVideo: <yt:accessControl action="rate" permission="allowed"/>
libgdata-Message: Unhandled XML in GDataYouTubeVideo: <yt:accessControl action="embed" permission="denied"/>
libgdata-Message: Unhandled XML in GDataYouTubeVideo: <yt:accessControl action="syndicate" permission="denied"/>
libgdata-Message: Unhandled XML in GDataYouTubeVideo: <yt:accessControl action="commentVote" permission="allowed"/>
libgdata-Message: Unhandled XML in GDataYouTubeVideo: <yt:accessControl action="list" permission="allowed"/>
libgdata-Message: Unhandled XML in GDataYouTubeVideo: <yt:rating numDislikes="5217" numLikes="82306"/>

Reproducible under Ubuntu Maverick with libgdata 0.6.4 and Totem 2.30.2. This makes Totem's YouTube plugin virtually unusable.