error Tekkit Classic - grey screen!

[billylathamxx]

After scouring the internet for weeks, I finally decided to come to the source of the issue.

My Tekkit Classic will not launch, instead I get a separate window as if it were to launch that is pure grey. I have tried everything that the internet has to suggest, and still nothing.

I'm getting the age old error message in the console of:

Exception in thread "Minecraft main thread" java.lang.RuntimeException: sidedDelegate null when attempting to getMinecraftLogger, this is generally caused by you not installing FML properly, or installing some other mod that edits Minecraft.class on top of FML such as ModLoader, do not do this. Reinstall FML properly and try again.

and I have no idea what it means. ANY help whatsoever will be massively appreciated!

 

Thank you in advance,

Billy

Edited March 24, 2016 by billylathamxx

[MrTrollNugNug]

Have you tried reinstalling the pack? It is saying something corrupted FML(Forge Mod Loader)