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It could be argued that a Big Reactor / Big Turbine combination powering a yellow-focused Laser Drill is also pretty much self-sustaining. And even without that, Yellorium will take you very far. I outlined the power situation in Tekkit in my >starter guide, if you are interested in the other options (points 16 and 17).

If you just want to produce large amounts of power, BigReactors is the recommended mod for this. If you explicitly want to make Atomic Science work, keep in mind that it is a severely outdated and somewhat bugged mod that requires some extra work. I never used AS myself, but what you describe sounds like a transport problem. Fluiducts (they are not called Liquiducts any more since TE3) do not carry very much per tick, so maybe you need to upgrade to something with more throughput. Extra Utilities Liquid Transfer Nodes can carry much more if you stuff tons of upgrades in, and maybe Tesseracts will work as well.

Don't spill logs into posts, that's what Pastebin is for. It's not exactly a spoiler. You are having this problem. Pick one of the solutions mentioned in the ticket.

Check if this applies to you, and follow the included instructions if it does. If not, please take your issue to the tracker, where it belongs. Also fetch >crash logs to make diagnosis possible.

Please take all issues to the tracker. That crash log will help greatly, >here is how to share it.

Please take all issues to the tracker. Also, don't spill logs into posts, that's what Pastebin is for. So you head over to the tracker now and make your issue ticket, fetch the complete crash log, upload it to a service like Pastebin, and link to that in the ticket. Then you should still describe what led to this error. There is a template to help you structure your problem. We have a very high solution rate for issues that are properly posted. For random bits of crash logs without explanation... not so much.

Alright, that sounds feasible. Make frequent backups of that world, because it will probably be hard to restore otherwise if the data gets corrupted. Unfortunately, corruptions are a fact of life and you need to take precautions manually.

Also, all issues belong on the tracker. And don't spill logs into posts, that's what Pastebin is for. Details on the issue here.

The devs generally don't read this, at least not looking for issues to solve. That's what the tracker is for. Looks like you were attempting to run it from the >new launcher beta. If you were doing this on purpose, report it in the thread I linked. Otherwise, I suggest you get the still-official old launcher and run it from there.

In case you are referring to this, unfortunately the answer is no. The feature was only introduced in 1.7.2, and Tekkit Main is still a 1.6.4 modpack. I cannot say for certain that it won't work, but I imagine that worldgen changes quite a bit between major Minecraft versions and thus makes newer worlds incompatible with older game versions. For instance, there are two new tree types in 1.7 (Dark Oak and Acacia), along with their own new biomes and much more. I imagine it to be non-trivial to convert anything of that back to 1.6.4. You may still have a chance if you find a 1.6.4 mod that offers worldgen options in that style, as HeatHunter implied. I know of no such mod, but I don't know everything. The prime address to discover mods is Minecraftforum. Bear in mind that adding mods to your Tekkit makes it a custom modpack that is not eligible for support. Platform Pagoda is where we discuss those. You could wait until Tekkit moves to 1.7, but as there has not even been an announcement yet, this may take a long time yet.

Yes. Try the forum section that is dedicated to Tekkit servers.

Oh dear, where to begin? Don't spill logs and diagnostics into posts, that's what Pastebin is for. Take all issues to the tracker, posting them on Discussion is against the rules. That Gamebooster software is probably crapware, better remove it again. Really just item moving? Make sure you describe your problem completely. Make sure that security software is not interfering with the game. Especially on slow machines such as yours, effects can be extreme. Try all that when you move over here to properly report your problem.

The beta discussion thread is the last place to ask for such things. Your first clue should always be Mojang support, and it looks like right now their service is indeed shaky.

This means that you can add mods fine, you are just crashing your game because you have no clue what you are actually doing. If you change anything about your Tekkit installation, it automatically becomes a custom modpack, which is not supported as a Tekkit installation. Head over to Platform Pagoda and look around for guides on how to modpack. It's not rocket science, but it's not entirely trivial, either.

You cannot move posts or topics, so you will have to start over with that ticket. I'll wait with further analysis until you did, and post it there.

Tekkit should run fine on default memory allocation (1 GiB), and you should only raise it to 2 GiB if adding resource packs or otherwise tinkering with it. All issues go on the tracker. However, you may first want to check if this applies to you.

Don't spill logs into posts, that's what Pastebin is for. This is Tekkit Discussion. Issues go on the tracker, not on Discussion. However, only issues with an actual Tekkit installation are supported. Once you modify the pack or make your own, you are running a custom modpack. These are not supported here. But they are discussed on Platform Pagoda, where somebody may be able to help you.

All issues go on the tracker, so please take it there. While you do, try to run the program cmd.exe or Command Prompt from the start menu (search for it if necessary), and report if this also produces the error.

Check if this applies to you. Otherwise, please make your own ticket on the tracker.

That is why I gave you the hint. The rules are not exactly easy to find here. Make sure to follow that link and see if one of the solutions in that ticket works for you.

Both possible fixes described here. Also, don't spill logs into posts, that's what Pastebin is for.

Please do us all a favour and only make screenshots. These should be enough to determine where you went wrong. My guess is that you are using vastly outdated pipes and not following all of the (convoluted) rules that they are imposing. Also, observe that the MJ power system, which Combustion Engines are part of, is just as outdated and not too reliable. Supplying your Refinery with a Redstone Flux (RF) network is preferable, as HeatHunter hinted. To do that, use at least a Hardened Energy Cell, supply it power with Steam Dynamos and hook the Cell up to the Refinery with Conduits. If this is all new to you, maybe you will find some parts of my >starter guide useful.

This looks like you tried to add a resource pack to vanilla Minecraft (as started from the Technic Launcher). This is of course allowed, but it also means that it's not a Tekkit topic. It might be a case for the issue tracker's launcher section. We generally handle issues on the tracker, not on Discussion.

There is a rule here against signing your posts. Your username is displayed anyway, so it's redundant and annoys some people. As for the issue, we handle these exclusively on the tracker. Before you make your own ticket, maybe check first if you are having this issue.

I assume you are still using all the old Buildcraft stuff. Most people have moved on towards newer mods for liquid transfer, namely Thermal Expansion Fluiducts. Try setting it up with those, but keep in mind that you need to wrench the output connection to extract mode and apply a redstone signal, or alternatively install a Pneumatic Servo and configure it to extract without a signal. It takes some getting used to, but it handily beats the old system with Wooden Pipes and Redstone Engines for every bloody export. Buildcraft Refineries are the only reliable Fuel producers in current Tekkit - and they sure work, if you wire them correctly. However, I'm not entirely sure if Refineries accept all sides as inputs or outputs. My working configuration usually had power going into the backside, oil pumped into the left and fuel pumped out of the right side. Or vice versa, but always from the sides. If your setup still fails with these hints, try to share pictures.