I have a MC 1.7.10 forge server that's been working fine for weeks, but after deciding to regenerate the world by deleting the folder it crashes. I deleted the world once and regenerated it fine, but was not happy with the seed so I did it again about 3 minutes later and now after a dozen attempts I can't get the server to start. I have determined it to be mekanism but not sure how or why. I am running Mekanism-1.7.10-9.1.0.281 with both generators and tools.

http://pastebin.com/3DGTqnHq
http://pastebin.com/g9vXVySH

First, edit you post and delete the log.

Second, pastebin the complete server log and crash report

Third, put those pastebin links in the post.

Thank you.

1.7 no longer supported... (Petition Aidan to keep it alive!! lol)

Even if no longer supported I have no issue helping people out as much as I can.

@GeneralGred I'll take a look at this tonight when I get home.

Thank you bookerthegeek, I know there is a fix because it worked fine for the past two weeks, I'd like to add that I also made the modpack for the server and that with the exception of a few client mods is completely identical and the game still works in single player. I'm not sure but my only guess could be that it has something to do with a plugin and world generation because this has happened 3 times, always when I generate a new world from scratch.

EDIT:
Current Plugins:
WorldEdit
NoSwear
Essentials
GroupManager
ClearLag
Administration_Panel
Votifier
TablistPrefix
Multiverse-Core
WorldGuard
NoCheatPlus
iDisguise
Shopkeepers
aBroadcaster
EssentialsChat
BanItem
SimpleHelpTickets
Lottery
mcMMO
BossShop
Multiverse-Portals
InfoBook
Vault
MassiveCore
EnjinMinecraftPlugin
Towny
Jobs
NoEnderpearl
HolographicDisplays
LWC
Factions
ChestShop

... You completely deleted the world folder, or just the dimensions....?

I found the problem and while I'm still looking into it I think my suspicion was right. I found out that the cause was that a conflict with Mekanism occurs when you have the mod GalaxySpace and turn off the generation of the added solar systems. I think it may have to do with an ore generation issue, I am going to continue to tweak the settings to find the root.

What launcher are you using?

It's a server bud.

completely deleted the worlds folder

Suggestions :
Try using thermos instead of kcauldron.
Also, your aware that Galaxy space doesn't get updated and isn't recommended by Galacticraft devs anymore?