I made this mod pack because of my love for Tinkers Construct and tech mods. I have been playing with this pack for about 2 weeks and it seems very stable. one problem I know of is sometimes on closing the world it the game can crash, however all work done on a world is saved before it crashes i have been unable to figure out why it does this.
This modpack includes a bunch of addons for tinkers construct aswell as notible mods such as IC2, Buildcraft, ExtremeReactors, Thermal Foundation (and affilated mods), Nuclear craft, EnderIO, Pam's harvestcraft, Actually Additions, Extra Utillitys, ICBM Classic, Mekanism, and alot more. Another great feature of this modpack is the music player mod which allows you to play music from youtube by hitting your f8 key in game.
besides the problem listed above i have not run into any other stability issues not caused by my own computer however im always willing to look into fixing any that come up.