Vivacity

Did you install Optifine? I heard it messes with stuff like this.

http://mirror.technicpack.net/Technic/mods/computercraft/computercraft-v1.33.zip

You log in with your Minecraft Account. If this is what your doing try logging in at their website and see if it fails.

Why is it in quotation marks. That's not very assuring.

Is this stock big dig? Your health seems a bit op and I see bees.

I'm running the latest build of GalactiCraft and I still get this message. It informs you about 1.6 as well, so there's no way you can stop these messages.

Probably through IRC

Delete your entire Technic folder. If that fails download it manually.

I doubt it. 2 GB is probably not enough to run Tekkit and your OS

Yep that's right. It's hard to wrap your mind around.

What I meant was a consumer outputs power into a bridge and a producer takes power from a bridge. I'll post screen shots as soon as I can.

Unloading dimension is completely normal.

What specific optifine setting could be causing this?

Clever man

ForgeModLoader-client.log will contain any errors minecraft encounters while launching.

Try setting it to 0 ,that'll either cause transfer to be unlimited or block it.

Rock Spin around Fire Vs A large mass performs revolutions upon itself while rotating upon a center point composing mostly of hydrogen and helium It can be complicated if you want it

Read the Wiki on the actual site for Thermal Expansion. It says there's a 25% power loss.

Tekkit is not complicated. It's just so expansive that it's hard to wrap your mind around.Break it down and it's simple.

Tesseracts have a 25% power loss. Otherwise I know of no limitations.

I heard that non source nether blocks cause lag. A quarry could, and bad piping.

Your using power crystals power converter right? A Consumer outputs power while a producer takes power in.

You have to also switch the consumer for a producer and the producer for a consumer.

Delete your entire hexxit folder and re-download. Back up your save. If it still crashes then it's got to be an issue with your world.

Reset the pack. The report cuts off but I see unknown character and this is a common error. Hit the gear box under the hexxit image and click Reset. It should Redownload all the files.