Ok... I've made some adjustments to the gf files. All the spare parts, shipcosts, etc, should all now be Litterbox settings.
The errant gf file (I say this tentatively) appears to be metamap.gf, when I replaced the Litterbox metamap.gf file into the server, it crashed straight away. I may have missed a setting somewhere when editing the gf files to Litterbox specs, so if there is anything erroneous at all, please post it here.
Oh, thanks to FireSoul putting up a chat server, chat is now working on Litterbox 3.