Viderizer

Read the sticky on Bug Board, you need to use Java 7 http://forums.technicpack.net/index.php/topic,2834.0/

Re: Help error log inside Pay attention to the stickies next time This is answered on a sticky in the Bug Board, http://forums.technicpack.net/index.php/topic,2834.0.html

EDIT: Dat ninja. Also, installing more Javas doesnt uninstall the older ones. Maybe your server is still using 6? Skylord_Dylan: Wrong place to ask but anyways: You don't java installed or it's not for the right platform. (etc. 32bit Java on 64bit comp)

Do you mean like one world with Tekkit and another without? Not possible, server mods affect all worlds.

Make backups and find out!

As it's a Bukkit plugin, it should just work as-is.

The problem is that your client is using Tekkit 2.0, not Tekkit 2.1. (Could see from missing ComputerCraft v1.3 and Turtle) In the launcher, go to "Options" and then select "Always use development builds". When Tekkit 2.1 is made the default, you can switch back to recommended builds.

So I saw few threads asking why their server doesn't install (etc. not finding "java" command), so I decided to make a step-by-step guide with images. Sorry if a thread like this exists already, I didn't find it. HINT: Click the images to see them full-size Step 1 Open your Control Panel. Step 2 Type "Advanced" in to the search field and press "View advanced system settings" Step 3 Press the "Enviroment variables" button Step 4 Find "Path" from the System variables list and hit "Edit" Step 5 Into the Value end, add "[tt];[/tt]" and then add path to your java /bin directory dependant from your Java version. For me, what I should add is this: Java6: "[tt];C:\Program Files\Java\jre6\bin[/tt]" Java7: "[tt];C:\Program Files\Java\jre7\bin[/tt]" Step 6 Now, hit "Ok" in every dialog and you are done! Now you should be able to launch the server installer from the .bat file.