Migrating a single player world to a server

When I copy the single player folder over to my server world folder the server suddenly stops recognizing all industrialcraft blocks. This persists if I create a new world (a new world right after installing will work).

I'm running minecraft 1.4.5 and the appropriate versions of forge and industrialcraft on both the server and singleplayer.

Any idea what I might be doing wrong?

It has that file yes, I haven't touched either config file. So they're the same unless servers have different config files.

[Fixed] The problem was that forge doesn't actually install when you run it in java, you have to run forge every time you start the server to use that method.