Just has forge-1.8-11.14.1.1334 and liteloader-installer-1.8.0-00-SNAPSHOT in addition to InventoryTweaks-1.60-dev-13.jar

Here's a copy of the crash info (no separate file was created, just the on-screen snap)
http://pastebin.com/gqCtPf0F

Exception in thread "main" [08:28:28] [main/INFO]: [java.lang.Throwable$WrappedPrintStream:println:748]: java.lang.UnsupportedClassVersionError: invtweaks/forge/asm/FMLPlugin : Unsupported major.minor version 52.0

All 1.60 versions require java 8 installed.