Torezu

Texture packs for either Technic or Tekkit must be put in the texturepacks folder for that specific modpack.

Please learn to read the stickies.

Reinstall OptiFine and see what that does. That means copy the contents of OptiFine into your modpack.jar, in case you're wondering.

I'm tired of people having the same issue when the OP hasn't posted enough information to tell if it's the same or not. Try my suggestions, and let us know if it works or doesn't. Be more specific.

Your launcher log says 64-bit OS and Java 1.7.0 - are you sure you're using Java 7u5 64-bit, or that you have 32-bit windows? I'd go ahead and update your Java, and/or remove older versions.

It really just looks like you need to reinstall.

We need a launcher log, not the name of the log, in the code box. Use pastebin if it's too long. This is usually caused by an illegal character in your techniclauncher path somewhere.

Then...you need to reinstall Technic. Be sure to back up worlds/waypoints.

Update your Java. Also, when that happens, you should exit, and re-enter. You'll probably find yourself on top of the area you were mining in. This is a Minecraft bug, not a Technic one.

@JM: You're no different. More info is needed.

Try downloading the server software...though if you can't figure that out, I would consider allowing someone else to host for you. It doesn't edit your minecraft.jar or anything else. It makes its own separate folder structure and everything.

Looks like maybe an AV/firewall blockage problem. What AV are you running?

Need a launcher log. Otherwise, probably no help, as white screens are...shall we say very common?

You have too many versions of Java. Keep one. Otherwise, it could still be the AV, even if it's off.

That doesn't especially matter, especially if it's the 32-bit version of Windows 7. Just run with the .jar. If you don't know how to create a batch file, download the Tekkit server software, grab the launch.bat file out of there, and change the file name inside it.

You have a quite old version of Java. I'd update it, and remove the old one(s). It'll help, even if it doesn't solve this problem.

We need a launcher log. Your antivirus would help too. Don't skimp on bug reports!

And if you're not on a marine map, the first person (within a certain margin) that had a titan and something resembling an army pretty much auto-won.

Anybody who wants help with problems like this should actually submit a bug report with the requested info. It not only provides useful information for troubleshooting, but it proves you can read.

Launcher log? Launcher version (not modpack version like you show)? Memory available and launcher setting? Texture pack you may be using, and other in-game settings that may affect memory use? All these things will be helpful.

Eek. Get a new version of the launcher, quick! I also recommend getting rid of AVG entirely, not just disabling it.

Now that I reread the OP, I also get the same impression. In that case, this may be a not-so-cleverly disguised attempt at piracy.

Titans kind of ruined the game for me.

Legitimately will be challenging. Are you using EE? If not, you will need nuclear and mass fabrication sooner rather than later.

Remove your lastlogin, launcher properties, and launcher file, redownload the launcher, and run it. That's been known to fix problems like this, though it may just be the minecraft.net servers acting up.