GhostName

Im playing with mods that were only updated to 1.7.10. And how do i give you the log?

I have made the modpack so it is custom, and I am trying to install it through the windows forge installer and the server is hosted and i have full acess to the files.

I was trying to instal forge for a 1.7.10 minecraft server and when i try to do so it says "invalid e-tag checksum" what the heck is that? Please help!