[Nothing but Recommended Version works!]

Well, you could, but why? The other versions of tekkit just have older versions of the same mods. Nothing really interesting to see. 

[Nothing but Recommended Version works!]

The last edition of tekkit includes an extra mod called Lexmanos legacy fixer. It allows the old version of forge it runs to work with new versions of java. Without it, it crashes. 

[Nothing but Recommended Version works!]

"G" has Lexmanos legacy fixer for java 8. The others do not. 

[My world crashes after transferring from tekkit to cusom modpack *SOLVED*]

Nevermind. Late nights are catching up with me. Naptime. 

 

[My Modpack Is crashing on my friend]

He's running java 6. He needs to get 7 or 8. 

[Modpack Crash]

How much ram are you allocating to the launcher?

[Modpack Crash]

Attachments don't work, use pastebin and include modpack API url. 

[Modpack won't start]

Attachments don't work, use pastebin. 

[Server Crash. Now "Can't Reach Server" (Corrupt World Problem?)]

Attachments done work here. Use Pastebin. Backup your world, remove dimensional doors, and try it again. 

[Server get crash when launching,]

Could you pastebin the full log? This looks like a partial log. 

[Mod packs wont start]

"Could not reserve enough space for 1048576KB object heap"

How much ram have you allocated to the launcher? Try 3GB.

[INACTIVE [1.7.10] [NO Whitelist]The Way Too Much Tech Pack, PVE, 10 SLOTS, Friendly]

Server down for maintenance.

 

Back up!

 

 

 

Also added 4space and Open Computers.

 

 

 

[I experince this problem a lot]

What modpack?  Post the modpack API url. And pastebin the crashlog. 

[INACTIVE [1.7.10] [NO Whitelist]The Way Too Much Tech Pack, PVE, 10 SLOTS, Friendly]

You are whitelisted. Welcome to the server, it's a small but friendly place. If you need help with Tinkers Construct I'll help you get started. Or ask StackSmasher, he is often online. 

I've been getting started with Ancient Warfare, feel free to check out my base near spawn. 

 

[Packs not launching]

How much ram is allocated to the launcher? 3GB is recommended. 

[Packs not launching]

This looks like a memory issue. How much ram do you have?

Also, verify if you have 64bit Java installed. 

[i can't install attack of the b team or hexxit]

Perhaps your antivirus software is being a bit over-zealous. Try disabling any security software you have and try it again. 

[help!!,tekkit keeps crashing as i log onto singleplayer world]

Dimensional doors is buggy. Backup your world, and remove it. 

[Tekkit Server trouble! Pls Help!]

Download This: http://files.minecraftforge.net/LegacyJavaFixer/legacyjavafixer-1.0.jar Then put it in your forge mods folder. 

[Crash Error When I try To Run My Modded Server]

Attachments don't work, use pastebin. Also provide modpack API link. 

[ME Auto Crafting]

If you cancel the order and re-try, does it still fail? Try breaking the ME controller and place it again. 

[Launch.bat]

It's probably this:

Download This: http://files.minecraftforge.net/LegacyJavaFixer/legacyjavafixer-1.0.jar Then put it in your forge mods folder

[How to read consoles?]

Read Plowman's posts. He responds to lots of crash reports in great detail. 

[Server Sided Mods]

If there is, I'm not aware of it. Once you set it up, it's not such a big deal for your users to download it. The launcher will install it all for them after  they find and click your modpack. 

[Server Sided Mods]

Your clients need to have whatever mods you added to your server on their computers too. You'll need to distribute a custom modpack.zip to them them via Dropbox, or copy.com, or setup Solder. Platform Pagoda has help for that.