I'm having this same exact problem. It was working just fine before failed upgrade attempt. Old Video's uploaded before upgrade issues are still working but new video uploads won't work. I get no thumbnails and no video. I've already paid my programmer to fix my site and he can't figure this one out.

I uploaded a video as you can see from this link

http://broadcastbaby.com/view/17/test-again/

as you can see below it says it don't exist.


File does not exist: /home/broaycom/public_html/404.shtml
[Tue Aug 7 00:33:50 2007] [error] [client 70.251.134.66] File does not exist: /home/broaycom/public_html/flvideo/17.flv
[Tue Aug 7 00:33:46 2007] [error] [client 70.251.134.66] File does not exist: /home/broaycom/public_html/404.shtml
[Tue Aug 7 00:33:46 2007] [error] [client 70.251.134.66] File does not exist: /home/broaycom/public_html/thumb/17.jpg
[Tue Aug 7 00:33:45 2007] [error] [client 70.251.134.66] File does not exist: /home/broaycom/public_html/404.shtml
[Tue Aug 7 00:33:45 2007] [error] [client 70.251.134.66] File does not exist: /home/broaycom/public_html/thumb/1_17.jpg