FML Mismatched errors. How to fix?

[TJ4542]

Ok, so here's what I got trying to log into my server from ftb:
ID 343 is mismatched. World: (ModID: Minecraft, type uv, ordinal 2) Game (ModID: RailCraft, type rc.item.cart.furnace, ordinal 2)
ID 102 is mismatched. World: (ModID: Minecraft, type uv, ordinal 1) Game (ModID: MFReloaded, type blockVanillaGlassPane, ordinal 0)
ID 342 is mismatched. World: (ModID: Minecraft, type uv, ordinal 1) Game (ModID: Railcraft, type rc.item.cart.chest, ordinal 1)
ID 79 is mismatched. World: (ModID: Minecraft, type akr, ordinal 0) Game (ModID: MFReloaded, type, blockVanillaIce, ordinal 0)
ID 328 is mismatched. World: (ModID: Minecraft, type uv, ordinal 0) Game (ModID: Railcraft, type rc.item.cart.basic, ordinal 0)

You cannot connect to this server.

Please help my friend just bought this.

 

[Connor Gavitt]

Did you remove Railcraft?

And what modpack and version is this?

 

[TJ4542]

Version 1.4.7 Ultimate modpack and no

 

[Connor Gavitt]

I meant modpack version, miss matched ids occur when config file ids do not match, you may be logging in with the wrong modpack version. I suggest you reinstall the modpack on your server so you know what version it is. This doesn't involve a world reset.

 

[TJ4542]

1.1.2 and do i need to reinstall my modpack client?

 

[Connor Gavitt]

1.1.2 and do i need to reinstall my modpack client?

I would first cohost a version and thine choose that in your launcher then choose that version for your server so they both match. By default with nothing change all ids should match if on he the same version.

 

[TJ4542]

I'm using a paid server host aka fluctis.how do I delete the modpack and then re-add the modpack to the current version, or do i just update?

 

[Connor Gavitt]

I'm using a paid server host aka fluctis.how do I delete the modpack and then re-add the modpack to the current version, or do i just update?

I don't use paid hosting so I have no idea what you mean

Do you have FTP or SFTP or SSH access?

 

[TJ4542]

Yeah we do. What do I need to do to fix this?

 

[Connor Gavitt]

Make sure your clients are on 1.1.2 then go to the launcher and click download server with ultimate 1.1.2 selected.

After you have the files upload them to your server replacing everything there with what is in the download. Should be coremods, mods, librarys, config. The server.jar and startup script do not need to be changed.