JaariAtmc

I will assume Windows. In case of a Mac, start at ~Application Support. Go to %appdata%\.roaming\.technic\modpacks\tekkit-legends\config Locate the mapwriter.cfg in this folder. Open this file with notepad. Edit the following line "I:teleportEnabled=0" to "I:teleportEnabled=1" Save the file and restart your game. You should now be able to teleport to your waypoints, if you have sufficient permissions to do so (in case of a server).

Use this version of Java instead. https://javadl.oracle.com/webapps/download/GetFile/1.8.0_251-b08/3d5a2bb8f8d4428bbe94aed7ec7ae784/unix-i586/jdk-8u251-macosx-x64.dmg

I replaced the old modpack.jar with forge for 1.16.5 and tekkit classic broke horribly. Tekkit classic wouldn't be classic anymore if you updated it. Then it just be Tekkit Kitchen Sink. Ptolemy, how could you forget about the great https://www.technicpack.net/modpack/tc-redux.786294?

Not a launcher issue and that's not a screenshot, that's a filepath to somewhere on your own computer.

It's probably the name, please don't put periods in file names.

Its a combination of Windows 10, an older cpu without dedicated gpu, and java above 8u251. It's a bit messy. There's a reason that the Mojang launcher uses java 8u51 by default.

Yeah, you'll have to downgrade java to 8u251 at max. https://javadl.oracle.com/webapps/download/AutoDL?BundleId=242044_3d5a2bb8f8d4428bbe94aed7ec7ae784

I made this simple contraption, with 3 unchanged broadcaster chips in them. It only requests from the left side chest, and shows 81 dirt in the requesting pipe, while there's only 27 dirt in the left chest. The other two are empty. Requesting all that dirt only gives 27, aka the contents of the left chest. What does your creative test setup look like?

Could you go back to your creative world, and request all the dirt from your chests?

I may have misunderstood your initial explanation: Are you trying to make a single routed interface pipe pull from multiple chests? Or are you trying to make it pull from both "single chests" that make a double chest?

As for your question regarding your creative test world and your singleplayer world, did you fill all the chest slots in your creative test system with a piece of dirt? Considering that vanilla minecraft handles a double chest as "two linked single chests", this behaviour is unfortunately... expected.

As you are playing Attack of the Bteam, I suggest using Thermal Expansion Reinforced or Resonant strongboxes instead of double chests. As you are this far into ProjectRed, you should have the resources for that as well. This both eliminates the double chest issue you have (strongboxes are single chests), as well as that resonant tier strongboxes are larger than double chests.

It might sound strange, but perhaps the mod filenames show which Forge version you should be using. Make sure that Optifine matches that used forge version.

The information you are looking for will be in the technic launcher log, and just above the above mentioned crashreport.

You need to disable the BSPKRS Core version checker (BspkrsCore config) to play TekkitMain, and you need to downgrade your java to 8u251 to actually play any modpack. https://javadl.oracle.com/webapps/download/AutoDL?BundleId=242044_3d5a2bb8f8d4428bbe94aed7ec7ae784

Wrong location, this should be platform pagoda. Also, that's 10 seconds worth of log. Do you have more?

Just go to .technic/logs instead and put the launcher log with the crash in it here. In pastebin or paste.ubuntu.com format, please. Don't wall o' text it here.

The appdata folder is hidden by default.

Your modpack.jar is in the top folder, not the bin folder. That, and you seem to have installed forge. Don't do that, rename the installer itself.

You can't make a .rar file and just rename it to .zip. That's the same as making a Word document, then saving it as a Powerpoint file. And now you are attempting to get Powerpoint to open your renamed Word document. When you zip your file, make sure its compressed as a zip. Not as a .rar. Also, Google Drive doesn't allow for direct downloads, so its useless for modpacks. Use Dropbox.

You either doubleclick the launch.bat or launch.sh. Probably launch.sh, as you are on a mac, not windows.

Not that weird, as the ExtCaves you included is for 1.14.4. Get the version for 1.16.5 https://www.curseforge.com/minecraft/mc-mods/extended-caves/files/3085297