Joker2040

Here's a re-creation of what they are using plus some of the mods suggested in the comments: http://www.technicpack.net/modpack/details/yogcraft-147-yogscast-pack.156638

Don't smelt ore blocks; make an Applied Energistics Grind Stone and Wooden Crank. Just 3 quartz dust, 3 stone/smelted-cobble, 2 cobble, and 4+5 sticks for double ores. Don't abuse the crank with the grind stone empty; I've had it break, losing a few sticks.

F11 just stretches the window to fill the screen. You have to select Full Screen Mode within Hexxit/Minecraft. Options/Video Settings.../Fullscreen: OFF.

Sounds like it could be qCraft.

Try full screen. I've heard it works. How to Fix Your Technic Launcher (crash bug + upsidedown screen bug) on Mac OSX

You set it to Adventure Mode, rather than Survival or Creative?

Make all mobs infernal and make the tougher versions rarer.

From Hexxit wikia: What causes chunk errors? Rapid approach to a portal?

<user>/AppData/Roaming/.technic/hexxit/Chocolate I'd move the Chocolate folder and see if it gets replaced. Or its contents.

<FTB launcher folder>/<FTB modpack folder>/minecraft/config/TinkersWorkshop.txt

I think there are bushes that grow Essence, similar to the berry bushes or the ore berry bushes.

Blocks from Secret Rooms cause this. This is terrible. You think to build a secret room for your best stuff, and it gets destroyed, because you hid it in a secret room.

Image search for Not Enough Items, find the Options screen. Hide/Show: O Press the O key.

Yep, it's bugged. I throw them into cacti to keep them from accidentally being used. It's safer than lava.

"Yes." If you want a challenge you can try making Rift Remover(s) and see if you can kill them faster than they spread. Minor Operator mode: In config/DimDoors.cfg change B:"Enable Rift Spread"=true to =false, and maybe B:"Enable Endermen Spawning from Rifts"=true to =false, at least during the removal. Then use the Rift Remover(s). (I don't know if Rift Removers are reusable or not.) config/DimDoors.cfg is located in your server folder or in Windows <user>/AppData/Roaming/.technic/hexxit/.

It crashed during the Scouter update. http://hexxit.wikia.com/wiki/Scouter says the Scouter causes crashes and an NBT-editor can be used to get rid of the Scouter.

Don't you see "<poster>, <time of post> Report" at the bottom of each post? That's what I was talking about. It's effectively signing the post with the username of the poster.

The posts are autosigned. sig below:

There could be a rift storm within the chunks that Minecraft has loaded. (view-distance=10, center chunk plus 10 chunk radius?)

Probably talking about a rift storm. Only rip one hole in reality at a time, then slap the right kind of door on it. I'm rethinking making compact portal rooms for a transportation network. One creeper and you could get a rift storm in your base. :(

Click Edit, [Edit: It's between the auto-signature and Report]. Then click "More Options..." in the pop up. Try increasing PermGen/PermSize. -XX:MaxPermSize=256M or higher, in a server launch command. The top right gear in the launcher, then the increase PermGen checkbox.

I've been seeing MCP a lot in these crash reports. Try increasing MaxPermSize. Add -XX:MaxPermSize=256M or even more to the launch line. Example: java -Xmx3G -Xms1G -XX:MaxPermSize=256M -Xincgc -jar Hexxit.jar nogui Classes go in the Perm. Not enough Perm, missing classes?

Or try increasing PermGen. The gear in the top right of the launcher shows you a check box for increased PermGen. PermGen is were the classes from each mod go. It's default max is only 32MB client and 64MB server.

You could try updating lwjgl. It says it crashed in native code. That would be not J or j, but v.

Add -XX:MaxPermSize=256M to the launch line. Example: java -Xmx3G -Xms1G -XX:MaxPermSize=256M -Xincgc -jar Hexxit.jar nogui Increase the PermSize for bulky mods. With MCP in there, too, you may need to set the max higher than 256M.