JaariAtmc

Could you send a link to your modpack (on the launcher, no, I don't want the dropbox url...)?

This is an issue with the Carpenters blocks garage door, which will be fixed in the next version of Tekkit Legends. In the meantime, request staff on said server to remove said garage door.

The version of Biomes O' Plenty you added is for Minecraft 1.8.9, while all other mods are for 1.7.10. You sure that is correct? Get your correct version here: http://files.minecraftforge.net/maven/com/github/glitchfiend/biomesoplenty/BiomesOPlenty/index_1.7.10.html

Nope. Issue is that there are no longer any EntityID slots available, for some strange reason.

Remove that .jar, as it already is a jar file. So it should be named "modpack" (and NOT "modpack.jar").

Forge (jarfile) has likely been renamed to modpack.jar (jarfile), but has to be renamed to "modpack"(jarfile).

Does not occur for me, did you add any other mods?

Again, says the file is no longer there.

Could be anything right now, but first, please upload your launcher log (found in %appdata%\.technic\logs\) to Ubuntu Paste, and post the link here so we can see what is troubling you.

Post the name of your modpack as well, so we can locate it on the launcher.

Corrupted chunk, try running Minecraft Region Fixer.

Well, its actually just update said mod, retest, update next mod, retest, until you get to the fun part with the ID conflicts. Edit: Checked, this time, the version of OpenModsLib used is incompatible with OpenBlocks, just grab the latest ones here: https://openmods.info/

Then update said link...

Update your dropbox link, as clicking that link does not link to anything.

Change your modpack URL from /modpack.zip?dl=0 to /modpack.zip?dl=1. Also, rename modpack.jar to modpack, as now it is modpack.jar.jar.

Best do that, yes.

(One of the) StevenDimDoors dimensions (is/) are corrupted, try backing up your server folder, then remove the dimdoors folder with the dimension. Mind that the dimension will be lost.

You added FastLeafDecay to your modpack, but this is integrated into RandomThings since 1.7.10. Therefore, it calls the same mod twice, and that causes issues. Also, you need to update your version of CodeChickenCore, as it is outdated. The game will not start without you updating it.

It is a required library for Openblocks.

Downgrade your java to 8u25, it's a known issue with Win10 and your graphics drivers.

You forgot to add OpenModsLib, you need atleast version 0.7.1.

Do you still have the modpack on the launcher? It would be easier to check for the error that way.

Some mods are zipped yes. Most mods are .jars though. Don't worry about it, unless it tells you "unzip me pls". Yes, I really saw that...

Now its called modpack.jar.jar.jar. Really, just name it "modpack".

You will have to add/delete the mods, rezip the file, upload it again, and change the dropbox link accordingly. Then bump the version number of your pack, so people get an update prompt when they start your pack.