When i logged in today i decided to make this new engine, and just when my friend made 2 wood gear we both got black screen and couldn't log in for a while without crashing again. I think its the new buildcraft version thats causing this.
Although this isn't an IC issue, I can still help.
Make sure the config file for the server is exactly the same as the client's (Read as: Make sure the ID's match). There was an issue where some of the items would re-number themselves automatically.
