Outdated Client! / Connection Lost End of stream

[Atreties]

Launcher/pack Version: (1.0.1.3) / 3.0.3 (I downloaded the most recent tekkit server and launcher files today)

Operating System: Windows 7 (64 bit)

Version of Java:7 (Also just downloaded 64 bit version from here today)

Description of Problem:

I am trying to set up a Tekkit server on my home computer, so I looked up several guides on how to do so, followed all steps, and got my server up and running.

I am trying to connect to it (and my local IP) and i get the following error:

Error Messages:

On server:

20:29:19 [sEVERE] java.io.IOException: Bad packet id 71

20:29:19 [sEVERE] at net.minecraft.server.Packet.a(Packet.java:75)

20:29:19 [sEVERE] at net.minecraft.server.NetworkManager.h(NetworkManager.

java:152)

20:29:19 [sEVERE] at net.minecraft.server.NetworkManager.c(NetworkManager.

java:273)

20:29:19 [sEVERE] at net.minecraft.server.NetworkReaderThread.run(SourceFi

le:76)

20:29:19 [iNFO] Disconnecting Atreties [/192.168.1.11:64377]: Outdated client!

20:29:19 [iNFO] Atreties [/192.168.1.11:64377] lost connection

On client:

Connection lost

End of stream

Link to pastebin of log:

http://pastebin.com/HVinWaek

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I tried looking up fixes for this for the past 30m and have found nothing. Only posting after I failed to find anything helpful.

Apologies if I missed something in the report format.

[awesomebilly]

My players got this message until they updated to a recent dev build.

[zergdog]

Correct, 3.0.3 is still DEV! It won't be recommend until the bugs our found and fixed.

Originally when they posted it they said 3 days assuming no bugs pop up, but if you check the forum there are plenty of bugs and im sure a 3.0.4 will be coming out shortly.