Modpack.jar install order help

[TanmanG]

I'm having problems getting a modpack working. My issue is that Technic Launcher installs mods that go into Minecraft.jar at the same time (in other words, it doesn't work as it should). Instead of having two files, one for Forge and the other for Mods, it loads them at the same time. Is there any bypass to this? I'm trying to get SCPCraft and Forge to work together but it crashes on startup. SCPCraft replaces some base Minecraft classes and Forge detects them as modifying causing the game to crash, this is a huge issue and it's preventing any modding for mods which include the Minecraft jar file.

"2017-06-21 16:21:17 [SEVERE] [ForgeModLoader] There is a binary discrepency between the expected input class agi (agi) and the actual class. Checksum on disk is 4fb84b93, in patch a4ef9198. Things are probably about to go very wrong. Did you put something into the jar file?
2017-06-21 16:21:17 [SEVERE] [ForgeModLoader] The game is going to exit, because this is a critical error, and it is very improbable that the modded game will work, please obtain clean jar files."

Minecraft Version: 1.4.5

Please help!

ForgeModLoader-client-0.log

Edited June 21, 2017 by TanmanG