madbrad21

I think you should remove the coremods folder you have in the mods folder to a completely different location. It's probably still reading them out of that folder, and finding duplicates of each mod/coremod.

@Shadowblaze11: this forum isn't for that specific modpack, but I doubt this pack has it's own bug section anyway. You still should have made a new post instead of hijacking someones thread. I think you have a memory issue, but it could be an issue with clearing the memory.

What version of tekkit is the server you trying to connect to running? You said you updated your client recently, so I think the server you are trying to connect to is running an older version.

I'm going to send you guys to this thread http://forums.technicpack.net/threads/server-1-1-8-wont-start-please-help-me.52738/ Following the directions here should help you out. Some of the tekkit libraries were incorrect. I know there's a better post that gets you the actual libraries without requiring a rename, but I couldn't find it.

It looks like an issue with the chicken chunks mod. Is this on a server or single player?

What machines are missing? Are they for a specific mod or are they from multiple mods?

Please post this in the tekkit classic bugs thread. It may be answered better there. This thread is for bugs with tekkit main aka tekkit with galacticraft.

Please include your crash report. No one can help you without the information in the crash log. It tells you that in your copy and pasted message. Go to the location it tells you and repost the log here please. Thanks

Minecraft isn't your problem here, you need to delete the tekkitmain folder in C:Users(username)AppDataRoaming The tekkitmain folder will be inside the .technic folder or possibly the .techniclauncher folder. Also the (username) needs to have your user name for your computer login without the (). After you delete that folder you should be able to restart the launcher. If you have world saves you may want to go into the folder and move them before you delete it. Try this out and post back results.

Do you have port forwarding turned on in the router, to allow port 25565 to go to your host machine?

Have you tried completely removing tekkit and reinstalling it?