havocx42 Posted March 5, 2012 Share Posted March 5, 2012 It looks like the Tekkit 2.1 server is currently not compatible with the recommended version of java and requires Java 1.7 Update to Java 1.7 to fix this problem. Hopefully. Java 1.7 can be found here. I'm not providing support for installing Java. I'm afraid you will have to figure that bit out yourself. Also please ensure that if you have a 64bit OS you are using the 64 bit version of java. Thanks to tradari for pointing this out. Link to comment Share on other sites More sharing options...
0 fardarklord Posted March 6, 2012 Share Posted March 6, 2012 Do I download JRE or JDK? (Newbie) Link to comment Share on other sites More sharing options...
0 Niklason Posted March 6, 2012 Share Posted March 6, 2012 Do I download JRE or JDK? (Newbie) You want the JRE version Link to comment Share on other sites More sharing options...
0 Shimmen Posted March 6, 2012 Share Posted March 6, 2012 I have the same problem, but I can't seem to get java 1.7 from my research Link to comment Share on other sites More sharing options...
0 Ragnar Homsar Posted March 6, 2012 Share Posted March 6, 2012 I have the same problem, but I can't seem to get java 1.7 from my research http://www.oracle.com/technetwork/java/javase/downloads/jdk-7u3-download-1501626.html Accept the license agreement, then download whatever installer corresponds to your OS. Make sure if you're on a 64-bit system that you download 64-bit Java. No, it doesn't matter that it's the JDK; it still has the JRE in it. Link to comment Share on other sites More sharing options...
0 Shimmen Posted March 7, 2012 Share Posted March 7, 2012 Well, there is the problem.. I have a mac, and there is no official release for it. I think I have java 1.7 now but the problem is still there. Link to comment Share on other sites More sharing options...
0 mifbifgiggle Posted March 7, 2012 Share Posted March 7, 2012 So... pretty much screwed if running on a 32 bit system. Link to comment Share on other sites More sharing options...
0 havocx42 Posted March 7, 2012 Author Share Posted March 7, 2012 So... pretty much screwed if running on a 32 bit system. why? Java 7 exists for 32bit systems. Link to comment Share on other sites More sharing options...
0 doe_sphilp Posted March 7, 2012 Share Posted March 7, 2012 i did that but its still not working :( Link to comment Share on other sites More sharing options...
0 ForbiddenLightning Posted March 7, 2012 Share Posted March 7, 2012 I'm on mac and all there doesn't seem to be a java 1.7, is there a way I can run a server? Sorry, never mind, I found this thread: http://forums.technicpack.net/index.php/topic,3011.0.html Link to comment Share on other sites More sharing options...
0 Synray Posted March 7, 2012 Share Posted March 7, 2012 I've updated to Java 1.7 using the Windows x86 download (I'm running Vista on a 64-bit, I assumed this was the correct installation as when I install programs, they go to Program Filesx86), but when launching the server, I still get this error: http://pastebin.com/29vyPW1j Link to comment Share on other sites More sharing options...
0 secret735 Posted March 7, 2012 Share Posted March 7, 2012 :( same here ive installed java 1.7 and i get the same error EDIT I FOUND A FIX i remembered when setting up the server it said to route system variable path to ;C:\Program Files\Java\jre6\bin so i decided hey what the hell could go wrong and i changed it to ";C:\Program Files\Java\jre7\bin" since the old jre was 6 i simply changed it to 7 boom everything succesfully loaded ------------- another problem appears! when i load the server and try to go on it with tekkit it says the following mods are not loaded and it just lists every mod Link to comment Share on other sites More sharing options...
0 Synray Posted March 8, 2012 Share Posted March 8, 2012 @Secret Your post helped me, I'll help you. Open your client, hit the options button, choose "Select Build Manually" or something like that, and choose the latest build. Should fix. Thanks, broski. Link to comment Share on other sites More sharing options...
0 secret735 Posted March 8, 2012 Share Posted March 8, 2012 @Secret Your post helped me, I'll help you. Open your client, hit the options button, choose "Select Build Manually" or something like that, and choose the latest build. Should fix. Thanks, broski. synray, no problem man, and tanks so mcuh for helping me with my problem! it works i can play with my friends now. *brofist* Link to comment Share on other sites More sharing options...
0 Rooster Posted March 8, 2012 Share Posted March 8, 2012 If you install Java, it does not remove old versions. You can manually control the version it is using under Windows by going to the Control Panel and opening the Java icon there. Go to the "Java" tab, then click "View..." (under Java Runtime Environment Settings). This will show the versions of Java installed to your machine. If you have some programs that still require a different version of Java, I would recommend not removing old versions, but instead controlling what applications use each. You can also simply uncheck Enabled for your old versions if you are unsure about removing them. Just make sure to leave the 1.7 version enabled for Minecraft's server. Link to comment Share on other sites More sharing options...
0 balto009 Posted March 9, 2012 Share Posted March 9, 2012 Thanks DUDE i just downloaded a ton of differend java 7 versions and now it works great! pease! Link to comment Share on other sites More sharing options...
0 shadeve Posted March 9, 2012 Share Posted March 9, 2012 The thing is, what if you have a mac, and you cant manually update it to java 1.7 because of the stupid software update which only does the rec build of java? Link to comment Share on other sites More sharing options...
0 Mind78 Posted March 9, 2012 Share Posted March 9, 2012 If you have Ubuntu OpenJDK 7 can be very hard to install, but it is possible, managed to get it in eventually using a custom PPA someone set up. Anyway, after you have gotten OpenJDK7 working you can still get a similar error, I did. The problem was with permissions in Linux, if you copy in files to your minecraft directory while in sudo and then run the server some of the files might be denied access. Make sure you are not in sudo when copying them to the folder and that usually fixes it. Just a tip. Link to comment Share on other sites More sharing options...
0 Zamuroy Posted March 9, 2012 Share Posted March 9, 2012 So, i did everything recommended in this thread... updated to Jave 1.7, its the 64bit Version for my 64bit OS, it's the only Java version enabled, the Path Variable is set to the jre7 version, restarted several times, downloaded the server again, in case config files may have been changed when starting with errors... But still exactly the same error stream, posted here before by many others... Any other ideas? Link to comment Share on other sites More sharing options...
0 bostinpo24 Posted March 9, 2012 Share Posted March 9, 2012 For all of you whom are having problems even though you have Java 7, I have found a solution. If you are running a 64 bit OS, don't install the x86 version. Install the x64. It's obvious, but people are still encountering these problems. Hope this helped :) Link to comment Share on other sites More sharing options...
0 Zamuroy Posted March 9, 2012 Share Posted March 9, 2012 For all of you whom are having problems even though you have Java 7, I have found a solution. If you are running a 64 bit OS, don't install the x86 version. Install the x64. It's obvious, but people are still encountering these problems. Hope this helped sadly that is not a solution for me, because i did... i hope with the update tomorrow, maybe there will be a fix, even for the rest of us Link to comment Share on other sites More sharing options...
0 lennymccoy Posted March 15, 2012 Share Posted March 15, 2012 If you have Ubuntu OpenJDK 7 can be very hard to install... Actually it´s not that hard to avoid this error if you just follow this short guide: http://askubuntu.com/questions/56104/how-can-i-install-oracle-java-jre-7 Link to comment Share on other sites More sharing options...
0 briggsred Posted March 17, 2012 Share Posted March 17, 2012 same here ive installed java 1.7 and i get the same error EDIT I FOUND A FIX i remembered when setting up the server it said to route system variable path to ;C:\Program Files\Java\jre6\bin so i decided hey what the hell could go wrong and i changed it to ";C:\Program Files\Java\jre7\bin" since the old jre was 6 i simply changed it to 7 boom everything succesfully loaded ------------- another problem appears! when i load the server and try to go on it with tekkit it says the following mods are not loaded and it just lists every mod I can't seem to figure out what you did, what file did you configure to get it to work? Link to comment Share on other sites More sharing options...
0 blackopskid7 Posted March 18, 2012 Share Posted March 18, 2012 same here ive installed java 1.7 and i get the same error EDIT I FOUND A FIX i remembered when setting up the server it said to route system variable path to ;C:\Program Files\Java\jre6\bin so i decided hey what the hell could go wrong and i changed it to ";C:\Program Files\Java\jre7\bin" since the old jre was 6 i simply changed it to 7 boom everything succesfully loaded ------------- another problem appears! when i load the server and try to go on it with tekkit it says the following mods are not loaded and it just lists every mod were do i go to set up the jr7 bin thing in the server Link to comment Share on other sites More sharing options...
0 CraveMode Posted March 18, 2012 Share Posted March 18, 2012 So I am getting that same error FINER: THROW java.lang.UnsupportedClassVersionError: net/minecraft/server/mod_IC2AdvancedMachines : Unsupported major.minor version 51.0 The only way to fix this is if the server is running 64bit java version 7? I am trying to use this on a host, verygames.us and they allow 3 versions.. minecraft vanilla, craftbukkit, and openmod. I like to run things on openmod cause the craftbukkit version they have the craftbukkit.jar hidden or something, I tried renaming Tekkit.jar to craftbukkit and gave errors. So, I just deleted the openMOD install, uploaded these files, started the server with Tekkit.jar and it loads everything fine except the IC2AdvancedMachines and I can not connect. Is anyone else using verygames as their host and got this to work? Link to comment Share on other sites More sharing options...
0 Rashen3695 Posted March 19, 2012 Share Posted March 19, 2012 Hello, I have done everything that everyone says to do and it still comes up as the 51.0 error.. I use windows 7 64-bit and have the right version of Java for it. I used the sticky guide to make a server too.... Nothing seems to be working. Help? Thanks. Link to comment Share on other sites More sharing options...
Question
havocx42
It looks like the Tekkit 2.1 server is currently not compatible with the recommended version of java and requires Java 1.7
Update to Java 1.7 to fix this problem. Hopefully.
Java 1.7 can be found here. I'm not providing support for installing Java. I'm afraid you will have to figure that bit out yourself.
Also please ensure that if you have a 64bit OS you are using the 64 bit version of java.
Thanks to tradari for pointing this out.
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