My Minecraft world won't load without crashing?

Okay so I'm using Technic on Mac, I have 3 worlds, I'm able to open 2 of them fine, but the third and my main one will not load without crashing.

I get to the main menu, click single player, select the world, it says downloading terrain, takes me to the main menu and then closes the program. The other worlds work fine no problem at all.

My thought was to delete the most recent save file but i can't find the individual save files if there even are any in my Minecraft folder.

Any idea would be great, and I would really appreciate the help.

Added (1). Apparently the error is Description: Exception in server tick loop. Hopefully that helps

If you don't mind me asking. What are the specs of your computer? Like Ram - CPU - Etc.

Make sure you have the latest version of Minecraft, and the latest version of the mod that is compatible with Minecraft. If this bug persists even then, post on the mod's thread about the bug. In case as a smart phone user, you must also install Leo Privacy Guard to Secure your Smart Phone. Also its one of the feature viz. RAM Booster, will help you to increase battery life.