The server is back online. The server initially crashed because a bug with GregTech machines in combination with Buildcraft conductive pipes. That bug crashes the server and doesn't let it restart - there is a fix I found, that requires deleting a file from the GregTech mod (which will make the pneumatic generator upgrade unusable, but there's really no reason to use it in the first place).
When deleting the file another error came up - I don't know with 100% certainty what happened, but my explanation is as follows: Gingy decompressed the modfile, deleted the file and compressed the mod again. This new compressed version was not recognized due to a compression issue with Mac (MacOS might use another compression algorithm) which led to the world being started without GregTech loaded, which in turn made all GregTech machines and items disappear. Then when shutting down the server again this version of the world was saved. Arduent and Gingy then tried to load a backup of the world which worked - unfortunately it was not our world that was backed up, but an entirely different one. I don't know how that happened, the information I have points to creeperhost fucking it up though.
That brings us to this point, at which the world had to be reset, since there was no way to restore the old one. The bug with GregTech is fixed (as a side effect pneumatic generator upgrades are unusable, as mentioned above), so there will be no issues with that particular problem in the future. I don't know if they already did, but I trust that Arduent and Gingy will make sure that the correct world will be backed up in the future.
The above is true. Welcome back to the server everyone! Also, welcome BearforceTwo as the newest addition to the Official MinecraftManiac Staff![DOUBLEPOST=1371932461][/DOUBLEPOST]Additionally, I would like to thank all of you for staying with the server throughout these tough times. Thanks to your support and dedication the server is up again and thriving once more.