havocx42

How are you running the server, I mean what command are you using? Where is the server placed in your directory structure. Have you tried checking the file permissions? The error says "Null output stream" and "at java.io.PrintStream.requireNonNull(Unknown Source)". Looks like it is unable to get hold of either a file output or standard out.

Should this be our general policy on posts that don't follow the bug report format? Also can we respond with minor insults and derision?

Mods also need to be ported to bukkit to even start being compatible with Tekkit. As far as I can see there is no bukkit version available. Watch this post, he may release a bukkit port at some point.

Yes http://forums.technicpack.net/index.php/topic,107.0.html. The instructions there are for upgrading but they should give you a general idea. Edit:Also if you want to remove all trees you can use the same tool and convert wood blocks(and leaves) to ID 0 to delete them.

You seem to be aware of this but as far as I know that is caused by not using Java 7, could you just confirm that the correct version of Java is configured by: pressing windows key+r type "cmd", click ok type "java -version" then copy paste the whole result here

if you google dackkorto maeyanie This thread pops up: http://www.minecraftforum.net/topic/382599-181-modloadermp-for-craftbukkit-and-canary/page__st__3060 It looks like they felt he was being rude.

*oops*

This is actually something that interests me. If the block IDs were to remain the same(unlikely ) then I don't see there being a problem as MC will automatically update the worlds. However the problems come in if either the mod makers or the Technic guys decide to make use of the new block IDs.If that happens one would need to convert the Block IDs after updating the world to Anvil. Happily Mojang put up some nice source code that explains how the new format works so I might write a converter for Anvil at some point.

Ok, if you don't want to install that the fix you have already found is fine, just thought I would mention the cause and an alternative fix.

You are an idiot. Read the stickies.

The only problem I have experienced in 2.1.1 so far is a small bug that prevents use of computercraft. It's easily fixed though, rename "[2]ComputerCraft" to ComputerCraft in the mods folder.

You need Java 7.

This is because the Launcher was written against Java 7. In Java 7 a lot of the Swing elements require parametrization If you want to solve this without removing the parameters and therefore maintain type safety install the java 7 jdk.

If you really wanted to switch you would need to find the ids of the blocks and items which are different in your server and Tekkit. Then convert your world using a tool like this.

Re: Blank white screen after login To upgrade to the the 2.1 client: in the launcher click options and tick "Use latest build" and it should upgrade

Are you implying anything that happens in the technicpack isn't on purpose? ;)

Well you are going to backup before you update anyway so try it and see. As far as I know there shouldn't be a problem.

install java 7

Ah, thanks for the info HalibutBarn.

Your error log says "mod_IC2AdvancedMachines : Unsupported major.minor version 51.0" maybe you should check out the stickied post called *FIX* mod_IC2AdvancedMachines : Unsupported major.minor version 51.0

why? Java 7 exists for 32bit systems.

You could try this no idea if it is what you need http://jdk7.java.net/macportpreview/

It happens whenever there is a mod mismatch when you join a server. He may have upgraded his client to 2.1 then tried to join his 2.0 server. The server sees that he doesnt have the correct versions of the mods and reports that. It's unclear from the OP what the problem is but one of us fixed it ;)

Yeah I'm not changing damage values, that's just an incompatibility between versions of the mods. Not going to be fixed.

I'm pretty sure Nogitsune is talking about the server. For anyone else this is the way to update the client. Nogitsune: Download the Tekkit Server 2.1 files extract them to a fresh folder, copy over the world, world_nether and world_the_end folders from your old server into the new folder, then run launch.bat.