Can you guys post a clip that you seem to be having problems with. ALso, if possible, install xterm, open it and write: uktube (and press enter). Then try to open a clip that you have been having problems with. Paste the link and click download. It will crash just the same, but the xterm will have debug output which will tell you what happened. Just copy paste that to me by email or to this forum and we can fix it.
Thanks!