Problem with LAN streaming

[Haldy]

Hello, I have a problem with streaming TV to LAN via VLC. I have IP 10.0.0.2, so i fill the client address to stream as 10.0.0.255 and port 1234. I create a playlist with adr. udp://@10.0.0.2:1234. If I execute that playlist on my PC, everything is OK. But if any other PC is execute that playlist, it gets a message: Unable to open 'udp://@10.0.0.2:1234' . I tried to disable my firewall, but it didn't help. Interesting is, that few weeks ago, everything was OK and I don't know about any changes to have a influence on it. I'm using Video mixing render 9 and DSCaler video codec. I try to execute that playlist at several computers on this LAN, but everywhere is the same problem .

Does anybody know, where could be the problem?

Thanks forward